Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

The Company included total stock-based compensation expense related to all its stock awards in various operating expense categories for the three months and nine months endedSeptember 30, 2013 and 2012, as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
	(In Thousands)
Product and content development	$	536	$	658	$	1,711	$	2,134
Sales and marketing	362		574		1,179		1,987
General and administrative	767		732		1,662		2,313
Total stock-based compensation	$	1,665	$	1,964	$	4,552	$	6,434

Schedule of Share-based Compensation, Stock Options, Activity

The following table represents a summary of the Company’s stock option activity under the 2009 Stock Incentive Plan and related information, without regard for estimated forfeitures, for the nine months ended September 30, 2013:

	Shares		Weighted Average Exercise Price
	(In Thousands)
Options outstanding at December 31, 2012	201		$	3.60
Options granted	150		$	12.97
Options exercised	(69	)	$	2.84
Options forfeited	(1	)	$	2.80
Options outstanding at September 30, 2013	281		$	8.79

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The fair value of the options granted in the nine months ended September 30, 2013 have been estimated on the date of grant using the Black-Scholes option pricing model with the following assumptions:

	Nine Months Ended September 30,
	2013	2012
Expected term	3.75 years	N/A
Risk-free rate	1.40% - 1.62%	N/A
Expected volatility	37.04% - 37.12%	N/A
Dividend yield	—%	N/A

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range

The following table summarizes information about options outstanding and exercisable at September 30, 2013:

	Options Outstanding				Options Exercisable
Exercise Prices	Number Outstanding as of September 30, 2013	Weighted Average Remaining Contractual Life (in Years)	Weighted Average Exercise Price		Number Exercisable as of September 30, 2013	Weighted Average Remaining Contractual Life (in Years)	Weighted Average Exercise Price
	(In Thousands)				(In Thousands)
$4.00	131	0.74	$	4.00	131	0.74	$	4.00
$12.97	150	4.98	$	12.97	—	—	$	—
	281	3.01	$	8.79	131	0.74	$	4.00

Schedule of Share-based Compensation, Restricted Stock Units Award Activity

The following table summarizes the activity for awards of restricted stock with service-based vesting terms for the nine months ended September 30, 2013:

	Restricted Stock		Weighted Average Grant Date Fair Value
	(In Thousands)
Unvested as of December 31, 2012	1,539		$	9.38
Granted	1,446		$	9.68
Vested	(464	)	$	8.93
Forfeited	(255	)	$	9.46
Unvested as of September 30, 2013	2,266		$	9.66

Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity

During the nine months endedSeptember 30, 2013 and 2012, the Company issued shares of common stock under the ESPP, as follows:

Offering Period Purchase Date	Number of Shares	Purchase Price
January 31, 2012	19,823	$	7.00
July 31, 2012	20,961	$	7.19
Total 2012	40,784
January 31, 2013	20,170	$	7.11
July 31, 2013	19,048	$	8.15
Total 2013	39,218

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions

The fair value of ESPP rights have been estimated on the date of grant using the Black-Scholes option pricing model with the following assumptions:

	Nine Months Ended September 30,
	2013	2012
	ESPP Rights	ESPP Rights
Expected term	6 months	6 months
Risk-free rate	0.08% - 0.11%	0.15%
Expected volatility	19.86% - 20.34%	9.00% - 29.40%
Dividend yield	—%	—%