Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2015

Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

A summary of the Company’s restricted stock units (“RSUs”) activity and weighted average exercise prices follows:

	Restricted Stock Unit Activity
	Number of Shares		Weighted Average Grant Date Fair Value (Per Share)		Aggregate Fair Value (in thousands)
Balance outstanding at December 31, 2014	—		$	—	$	—
Granted	1,256,500		10.31		—
Exercised	—		—		—
Forfeited	(36,000	)	10.31		—
Non-vested and outstanding at September 30, 2015	1,220,500		$	10.31	$	9,227
Expected to vest at September 30, 2015	893,956		$	10.31	$	6,758

Summary of Stock-Based Compensation Expense Related to Employee Stock Options

The following table summarizes stock-based compensation expense related to employee stock options and restricted stock units (“RSUs”) (under ASC 718-10 included in Company’s statements of operations for the periods presented (amounts in thousands):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2015		2014		2015		2014
Cost of revenue	$	288	$	365	$	1,092	$	1,209
Sales and marketing expense	760		1,030		2,292		2,766
General and administrative expense	911		1,088		2,590		2,800
Product development expense	927		1,171		2,819		2,783
Total stock-based compensation included in costs and expenses	$	2,886	$	3,654	$	8,793	$	9,558

Weighted Average Assumptions of Fair Value Options Using Black-Scholes Option-Pricing Model

The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted average assumptions:

	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2015	2014	2015	2014
Dividend yield	0.0%	0.0%	0.0%	0.0%
Risk-free interest rate	1.7%	1.7%	1.3% - 1.7%	1.5% - 1.7%
Expected life (in years)	5	5	5	5
Historical volatility	47.4%	50.9%	47.4% - 49.7%	50.9% - 53.7%

Summary of Stock Option Activity and Weighted Average Exercise Prices

A summary of the Company’s stock option activity and weighted average exercise prices follows:

	Stock Option Activity				Weighted Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value (in thousands)
	Options		Weighted Average Exercise Price
Balance outstanding at December 31, 2014	10,769,149		$	10.95
Granted	792,250		10.22
Exercised	(576,577	)	4.37
Cancelled or expired	(1,415,553	)	12.20
Balance outstanding at September 30, 2015	9,569,269		$	11.09	6.83	$	3,155
Options vested and expected to vest at September 30, 2015	8,582,041		$	11.11	6.61	$	3,155
Options exercisable at September 30, 2015	5,448,479		$	10.91	5.64	$	3,155

Summary of Status of Nonvested Shares

A summary of the status of the Company’s nonvested shares as of December 31, 2014, and changes during the nine months endedSeptember 30, 2015 is as follows:

	Options		Weighted Average Grant- Date Fair Value
Nonvested Shares at December 31, 2014	6,032,315		$	5.66
Granted	792,250		4.47
Vested	(1,288,222	)	5.29
Cancelled or expired	(1,415,553	)	6.24
Nonvested Shares at September 30, 2015	4,120,790		$	5.35