View Filing Data

Less: accumulated depreciation and amortization

^[1]

$ 28,083

$ 29,142

^[1]

(25,678)

(25,585)

Property and equipment, net

^[1]

2,405

3,557

Computer and Other Related Equipment

Purchased and Internally Developed Software

^[1]

19,157

18,467

^[1]

6,687

6,811

Furniture and Fixtures

^[1]

1,071

1,493

Leasehold Improvements

^[1]

$ 1,168

$ 2,371

[1]	Includes the original cost and accumulated depreciation of fully-depreciated fixed assets which were $19.5 million and $21.7 million at December 31, 2016 and 2017, respectively.

Property and Equipment (Parenthetical) (Detail) - USD ($)
$ in Thousands

Dec. 31, 2017

Dec. 31, 2016

Accumulated depreciation and amortization

^[1]

$ 28,083

$ 29,142

^[1]

25,678

25,585

Fully Depreciated Fixed Assets

Accumulated depreciation and amortization

21,700

19,500

$ 21,700

$ 19,500

[1]	Includes the original cost and accumulated depreciation of fully-depreciated fixed assets which were $19.5 million and $21.7 million at December 31, 2016 and 2017, respectively.

Property and Equipment - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property Plant And Equipment [Abstract]
Depreciation and amortization expense	$ 2.8	$ 3.2	$ 3.6

Credit Agreement - Additional Information (Detail) - USD ($)	1 Months Ended
	Dec. 31, 2016	Apr. 30, 2008
Debt Disclosure [Abstract]
Secured revolving credit facility		$ 30,000,000
Early termination penalties of credit agreement	$ 0

Future Minimum Payments (Detail) $ in Thousands	Dec. 31, 2017 USD ($)
Contractual Obligation Fiscal Year Maturity Schedule [Abstract]
Facilities operating leases 2018	$ 1,370
Facilities operating leases 2019	1,476
Facilities operating leases 2020	1,520
Facilities operating leases 2021	1,566
Facilities operating leases 2022 and after	5,417
Facilities operating leases Total minimum payments	11,349
Other contractual obligations 2018	2,634
Other contractual obligations 2019	811
Other contractual obligations 2020	1
Other contractual obligations 2021	0
Other contractual obligations 2022 and after	0
Other contractual obligations, Total minimum payments	3,446
Total 2018	4,004
Total 2019	2,287
Total 2020	1,521
Total 2021	1,566
Total 2022 and after	5,417
Total minimum payments	$ 14,795

Commitments and Contingencies - Additional Information (Detail) - USD ($)	1 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Commitments And Contingencies Disclosure [Abstract]
Amended lease period	84 months
Payments for lease termination fee	$ 671,000
Lease expiration date	Mar. 31, 2025
Contribution as credit against lease payments	$ 180,000
Letter of credit amount payable	575,000
Reduction in letters of credit	$ 100,000
Rent expense		$ 2,000,000	$ 2,000,000	$ 1,900,000

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2017	Dec. 31, 2015	Dec. 31, 2014
Income Tax [Line Items]
U.S. federal income tax rates		34.00%	34.00%
Deferred tax balances, net		$ 14,413
Unrecognized Tax Benefits		1,122	$ 1,070	$ 3,700	$ 888	$ 717
Valuation allowance		32,668	44,522		$ 34,500
Change in the valuation allowance		(12,100)	10,000
Federal
Income Tax [Line Items]
Net operating loss carryforwards		75,400
Federal \| Earliest Tax Year
Income Tax [Line Items]
Net operating loss carryforwards		1,700	$ 1,700
Research and Development Tax Credit
Income Tax [Line Items]
Net operating loss carryforwards		5,000
State and City
Income Tax [Line Items]
Net operating loss carryforwards		$ 5,500
Net operating loss carryforwards expiration year		2025
Scenario Plan
Income Tax [Line Items]
U.S. federal income tax rates	21.00%

Loss from Continuing Operations Before Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
United States	$ (6,022)	$ (83,920)	$ (573)
Foreign	(23)	(92)	3
Loss from continuing operations before provision for income taxes	$ (6,045)	$ (84,012)	$ (570)

Provision for Income Taxes from Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current provision
State	$ 42	$ 54	$ 27
Deferred provision (benefit)
Federal	14,638	(9,830)	1,187
Valuation allowance	(14,638)	9,830	(1,187)
Total income tax expense	$ 42	$ 54	$ 27

Computation of Income Tax Expense from Continuing Operations Using Federal Statutory Rate (Detail) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2017

Dec. 31, 2016

Dec. 31, 2015

Income Tax Disclosure [Abstract]

Income tax benefit at U.S. statutory rate

$ (2,055)

$ (28,564)

$ (194)

State taxes, net of valuation allowance

Stock-based compensation

^[1]

2,396

489

802

Non-deductible goodwill

16,917

Impact of 2017 Tax Act

14,413

Valuation allowance

(14,638)

9,830

(1,187)

Research tax credits

(156)

(541)

(510)

Other expenses

1,888

1,099

Total income tax expense

$ 42

$ 54

$ 27

[1]	Includes non-deductible stock-based compensation and beginning in 2017, excess tax benefits and shortfalls from stock-based compensation.

Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Accrued liabilities not currently deductible	$ 721	$ 1,323
Intangible assets-excess of financial statement over tax amortization	939	2,045
Goodwill recognized on financial statements in excess of tax amortization	3,750	8,683
Stock-based compensation	1,680	4,181
Federal net operating losses	15,887	17,619
State and city net operating loss carryforwards	5,403	6,330
Research & experimental tax credit carryforwards	3,832	3,676
Other	456	665
Gross deferred tax assets	32,668	44,522
Valuation allowance	(32,668)	(44,522)	$ (34,500)
Net deferred tax assets	$ 0	$ 0

Summary of Activity Related to Tax Contingencies Recorded As an Offset to Deferred Tax Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Gross tax contingencies, beginning balance	$ 1,070	$ 888	$ 717
Gross increases to tax positions associated with prior periods	0	0	0
Gross increases to current period tax positions	52	182	171
Gross decreases to tax positions associated with prior periods	0	0	0
Settlements	0	0	0
Lapse of statute of limitations	0	0	0
Gross tax contingencies, ending balance	$ 1,122	$ 1,070	$ 888

Stockholders Equity - Additional Information (Detail)		1 Months Ended		3 Months Ended		6 Months Ended	12 Months Ended
Stockholders Equity - Additional Information (Detail)	Feb. 28, 2015 shares	Oct. 31, 2016 shares	May 31, 2016 shares	Jun. 30, 2015 $ / shares	Mar. 31, 2015 $ / shares	Jun. 30, 2015 USD ($)	Dec. 31, 2017 USD ($) Vote $ / shares shares	Dec. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Jan. 01, 2018 shares	Jan. 01, 2017 shares	Nov. 30, 2014 shares
Shareholders Equity And Share Based Payments [Line Items]
Preferred stock, shares authorized							1,000,000
Common stock, shares authorized							137,500,000	137,500,000
Preferred stock, par value \| $ / shares							$ 0.01
Treasury stock acquired, value \| $								$ 365,000	$ 3,803,000
Total amount of quarterly dividends declared \| $								$ 0
Dividends payable \| $							$ 21,907,000
Options granted with exercise prices less than current market value, Shares							0	0	0
Income tax benefit related to stock-based compensation included in net loss \| $							$ 0	$ 0	$ 0
Unrecognized stock option compensation not yet recognized \| $							2,500,000
Proceed from exercise of stock option \| $							89,000	$ 242,000	$ 220,000
Repurchase of stock for tax withholding								97,000	70,000
Vested, Shares								284,000	257,000
Minimum withholding tax, remitted in cash \| $								$ 297,000	$ 284,000
Options vested	139,000
Granted, Shares	108,000
Options contractual term			10 years
Stock-based compensation expense \| $							$ 4,597,000	10,183,000	10,025,000
Stock purchased by eligible employee							9,906
Executive Officer
Shareholders Equity And Share Based Payments [Line Items]
Stock-based compensation expense \| $								$ 2,400,000	$ 661,000
Maximum
Shareholders Equity And Share Based Payments [Line Items]
Stock purchased by eligible employee, price per share \| $ / shares							$ 3.07
Minimum
Shareholders Equity And Share Based Payments [Line Items]
Stock purchased by eligible employee, price per share \| $ / shares							$ 2.58
Equity Option
Shareholders Equity And Share Based Payments [Line Items]
Unrecognized compensation cost, weighted average recognition period							2 years 9 months 18 days
Accelerated vesting, shares		288,877	27,000
Restricted Stock
Shareholders Equity And Share Based Payments [Line Items]
Unrecognized compensation cost, weighted average recognition period							2 years 3 months 18 days
Unrecognized compensation expense \| $							$ 5,000,000
Vested, Shares							855,000
Accelerated vesting, shares		190,187	33,000
Granted, Shares							622,000
Stock Incentive Plan 2012
Shareholders Equity And Share Based Payments [Line Items]
Stock incentive plan, annual increase as a percentage of outstanding common stock							5.00%
Stock incentive plan, options term							10 years
Stock incentive plan, options annual vesting percentage							25.00%
Stock incentive plan, vesting period							4 years
Stock Incentive Plan 2012 \| Maximum
Shareholders Equity And Share Based Payments [Line Items]
Stock incentive plan, shares authorized											15,844,158
Stock Incentive Plan 2012 \| Minimum
Shareholders Equity And Share Based Payments [Line Items]
Stock incentive plan, shares authorized											2,152,989
Stock Incentive Plan 2012 \| Equity Option \| Maximum
Shareholders Equity And Share Based Payments [Line Items]
Stock incentive plan, shares authorized							3,500,000
Stock Incentive Plan 2012 \| Restricted Stock Units
Shareholders Equity And Share Based Payments [Line Items]
Stock incentive plan, options annual vesting percentage							25.00%
Stock incentive plan, vesting period							4 years
Employee Stock Purchase Plan Twenty Fourteen
Shareholders Equity And Share Based Payments [Line Items]
Stock incentive plan, shares authorized								225,000
Percentage of compensation eligible for purchase of stock								15.00%
Maximum value of stock employee is permitted to purchase in any calendar year \| $								$ 25,000
Stock purchased by eligible employee								29,365	27,692
Employee Stock Purchase Plan Twenty Fourteen \| Maximum
Shareholders Equity And Share Based Payments [Line Items]
Stock purchased by eligible employee, price per share \| $ / shares								$ 4.23	$ 4.70
Employee Stock Purchase Plan Twenty Fourteen \| Minimum
Shareholders Equity And Share Based Payments [Line Items]
Stock purchased by eligible employee, price per share \| $ / shares								$ 2.52	$ 3.70
Subsequent Event \| Stock Incentive Plan 2012 \| Minimum
Shareholders Equity And Share Based Payments [Line Items]
Stock incentive plan, shares authorized										2,189,624
Class B
Shareholders Equity And Share Based Payments [Line Items]
Common stock, shares authorized							125,000,000	125,000,000
Votes per share \| Vote							1
Number of shares authorized to be repurchased												3,000,000
Treasury stock acquired, shares								89,000	924,000
Treasury stock acquired, value \| $								$ 365,000	$ 3,800,000
Treasury stock, shares retired							239,000	720,000	1,375,000
Quarterly dividends declared per share \| $ / shares				$ 0.02	$ 0.02		$ 0.50
Class B \| Stock Incentive Plan 2012 \| Maximum
Shareholders Equity And Share Based Payments [Line Items]
Stock incentive plan, shares authorized							2,000,000
Class B \| Employee Stock Purchase Plan Twenty Fourteen
Shareholders Equity And Share Based Payments [Line Items]
Common stock purchase price as a percentage of fair value								95.00%
Class A
Shareholders Equity And Share Based Payments [Line Items]
Common stock, shares authorized							12,500,000	12,500,000
Votes per share \| Vote							25
Quarterly dividends declared per share \| $ / shares				$ 0.02	$ 0.02		$ 0.50
Class A and Class B
Shareholders Equity And Share Based Payments [Line Items]
Total amount of quarterly dividends declared \| $						$ 1,700,000

Stock-based Compensation Expense by Operating Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation	$ 4,597	$ 10,183	$ 10,024
Service Costs
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation	515	693	1,189
Sales and Marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation	1,014	1,738	1,307
Product Development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation	679	1,569	2,410
General and Administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation	$ 2,389	$ 6,183	$ 5,118

Assumptions to Estimate Fair Value for Stock Options at Grant Date (Detail) - Time Vested Stock Options	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate, minimum	1.68%	0.86%	1.13%
Risk-free interest rate, maximum	2.09%	1.70%	1.56%
Expected volatility, minimum	54.00%	56.00%	59.00%
Expected volatility, maximum	56.00%	58.00%	65.00%
Weighted average expected volatility	56.00%	58.00%	62.00%
Expected dividend yield		0.00%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life (in years)	4 years	4 years	4 years
Expected dividend yield	0.00%		0.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life (in years)	6 years 3 months	6 years 3 months	6 years 3 months
Expected dividend yield	3.91%		0.36%

Summary of Stock Option, Restricted Stock Award, and Restricted Stock Unit Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Feb. 28, 2015	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options and restricted stock available for grant, Beginning Balance		3,646,000
Options and restricted stock available for grant, increase to pool			2,153,000
Options granted		(1,262,000)
Restricted stock granted	(108,000)
Options exercised		33,000
Options expired		2,250,000
Options forfeited		944,000
Options and restricted stock available for grant, Ending Balance		7,762,000	3,646,000
Options exercisable at December 31, 2017		3,860,000
Number of shares, Beginning Balance		7,678,000
Options granted, Shares		1,262,000
Options exercised, Shares		(33,000)
Options expired, Shares		(2,250,000)
Options forfeited, Shares		(944,000)
Number of shares, Ending Balance		5,713,000	7,678,000
Weighted average exercise price, Beginning Balance		$ 5.97
Options granted, Weighted average exercise price		2.75
Options exercised, Weighted average exercise price		2.75
Options expired, Weighted average exercise price		6.61
Options forfeited, Weighted average exercise price		4.10
Weighted average exercise price, Ending Balance		5.33	$ 5.97
Options exercisable at December 31, 2017		$ 6.25
Weighted average remaining contractual term, End of the period		5 years 11 months 4 days	5 years 26 days
Weighted Average Remaining Contractual Term, Options exercisable at December 31, 2016		4 years 6 months 18 days
Aggregate intrinsic value, Outstanding Ending Balance		$ 604	$ 0
Aggregate intrinsic value, Options exercisable at December 31, 2016		$ 3
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted		(622,000)
Restricted stock forfeited		653,000

Stock Compensation Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of options granted	$ 1.29	$ 2.05	$ 2.13
Intrinsic value of options exercised (in thousands)	$ 11	$ 23	$ 36
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total grant date fair value of restricted stock vested (in thousands)	$ 3,686	$ 5,612	$ 7,657

Summary Restricted Stock Awards and Restricted Stock Units Activity (Detail) - $ / shares		12 Months Ended
	Feb. 28, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Shares	108,000
Vested, Shares			(284,000)	(257,000)
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested Shares, Beginning Balance		2,757,000
Granted, Shares		622,000
Vested, Shares		(855,000)
Forfeited, Shares		(653,000)
Unvested Shares, Ending Balance		1,871,000	2,757,000
Weighted average grant date fair value, Beginning Balance		$ 3.90
Granted, Weighted average grant date fair value		2.82
Vested, Weighted average grant date fair value		4.31
Forfeited, Weighted average grant date fair value		4.20
Weighted average grant date fair value, Ending Balance		$ 3.25	$ 3.90

401(k) Savings Plan - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Postemployment Benefits [Abstract]
Cash Contributions	$ 253,000	$ 288,000	$ 276,000

Goodwill - Additional Information (Detail) - USD ($)	12 Months Ended
Goodwill - Additional Information (Detail) - USD ($)	Dec. 31, 2016	Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill impairment loss	$ 63,305,000
Goodwill	$ 0	$ 0

Segment Reporting and Geographic Information - Additional Information (Detail) - Segment	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting [Abstract]
Number of operating segments	1	1	2

Segment Information (Detail) - USD ($) $ in Thousands	12 Months Ended
Segment Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information
Revenue	$ 90,291	$ 129,547	$ 143,013
Operating expenses	96,652	150,139	145,016
Loss from operations	(6,361)	(83,897)	(507)
Less reconciling items:
Stock-based compensation	4,597	10,183	10,024
Acquisition and disposition related costs		662	219
Gain on sale of Archeo assets			(1,496)
Interest expense and other, net	(316)	115	63
Loss from continuing operations before provision for income taxes	$ (6,045)	$ (84,012)	(570)
Operating Segments
Segment Reporting Information
Revenue			143,013
Operating expenses			134,773
Loss from operations			8,240
Less reconciling items:
Stock-based compensation			10,024
Acquisition and disposition related costs			219
Gain on sale of Archeo assets			(1,496)
Interest expense and other, net			63
Loss from continuing operations before provision for income taxes			(570)
Operating Segments \| Call driven
Segment Reporting Information
Revenue			139,886
Operating expenses			132,077
Loss from operations			7,809
Operating Segments \| Archeo
Segment Reporting Information
Revenue			3,127
Operating expenses			2,696
Loss from operations			$ 431

Revenues by Geographic Region (Detail) - Geographic Concentration Risk - Consolidated Revenue

12 Months Ended

Dec. 31, 2017

Dec. 31, 2016

Dec. 31, 2015

100.00%

United States

96.00%

97.00%

Canada

4.00%

3.00%

Other Countries