Stock-based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Assumptions in Calculating Fair Value of Stock Options Using Black Scholes

Our assumptions in calculating the fair value of our stock options using Black-Scholes our assumptions for the years ended December 31 were as follows:

	2014		2013		2012
Expected file (in years)	5.5		5.5		5.5
Risk-free interest rate (%)	1.5%-1.9%		1%-1.5%		1%-1.1%
Volatility (%)	55%-62%		63%-64%		61%-64%
Dividend yield (%)		0%		0%		0%

Summary of Stock Option Activity and Related Information

A summary of stock option activity and related information follows (all share amounts in thousands):

	Number of Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value ($000)
Outstanding at December 31, 2013		17,177		$	4.47
Granted		2,656			2.62
Exercised		(232	)		2.36
Expired		(2,399	)		6.29
Forfeited		(1,601	)		2.89
Outstanding, December 31, 2014		15,601		$	4.00	5.3		$	4,787
Exercisable, December 31, 2014		10,978		$	4.53		4.0	$	2,136
Vested and expected to vest, December 31, 2014		14,453		$	4.11		5.0	$	4,128

Schedule of Exercise Prices for Options Outstanding

Exercise prices for options outstanding at December 31, 2014 as follows (all share amounts in thousands):
Exercise Prices	Options Outstanding		Weighted-Average Exercise Prices of Options Outstanding		Weighted-Average Remaining Contractual Life of Options Outstanding (years)		Options Vested and Exercisable		Weighted-Average Exercise Prices of Options Vested and Exercisable		Weighted-Average Remaining Contractual Life of Options Vested and Exercisable (years)
$ 1.39 – $ 2.18		281	$	1.46		7.2		137	$	1.49		6.9
$ 2.20 – $ 3.47		8,926	$	2.65		5.8		4,877	$	2.73		3.3
$ 3.69 – $ 5.96		3,484	$	4.08		4.4		3,103	$	4.05		4.2
$ 6.77 – $ 9.86		2,910	$	8.27		4.7		2,861	$	8.27		4.6
Total end of year		15,601						10,978

Summary of Restricted Stock Activity

A summary of restricted stock activity follows (all share amounts in thousands):

	Nonvested Shares			Weighted Average Grant Date Fair Value
Nonvested at December 31, 2013		2,218		$	2.68
Granted		830			2.30
Vested		(1,064	)		2.90
Forfeited		(19	)		2.40
Nonvested at December 31, 2014		1,965		$	2.40

Class A Common Stock Reserved for Future Issuance

As of December 31, 2014, the shares of Class A Common Stock reserved for future issuance are:

	(in thousands)
Stock incentive plan		3,118
Outstanding stock options		15,601
Note warrant hedge (see Note 12)		10,001
For Series B to A conversion		4,801
Employee stock purchase plan		1,840
Total shares restricted for future use		35,361

Non-Cash Stock Based Compensation Expense

Non-cash stock based compensation expense was included in the following income statement captions for the years ended December 31:

	2014		2013		2012
Direct costs of revenue	$	3,602	$	4,802	$	6,131
Research and development expenses		1,244		1,106		1,599
Sales and marketing expense		278		513		483
General and administrative expense		425		615		808
Total non-cash stock compensation expense	$	5,549	$	7,036	$	9,021