Stock-Based Compensation

9 Months Ended

Sep. 30, 2014

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

Total stock-based compensation expense recognized in our consolidated statements of operations includes amounts related to stock options, restricted stock units, and employee stock purchase plans and was as follows (in thousands):



	Quarters Ended September 30,				Nine Months Ended September 30,
	2014		2013		2014		2013
Total stock-based compensation expense	$	1,148	$	1,613	$	4,158	$	5,671

The fair value of options granted determined using the Black-Scholes model used the following weighted-average assumptions:



	Quarters Ended September 30,				Nine Months Ended September 30,
	2014		2013		2014		2013
Expected dividend yield	0	%	0	%	0	%	0	%
Risk-free interest rate	1.30	%	0.96	%	1.20	%	0.82	%
Expected life (years)	4.5		3.8		3.9		4.0
Volatility	42	%	48	%	40	%	48	%

The total stock-based compensation amounts for 2014 and 2013 disclosed above are recorded in their respective line items within operating expenses in the consolidated statement of operations. As of September 30, 2014, we had $12.1 million of total unrecognized compensation cost, net of estimated forfeitures, related to stock awards. The unrecognized compensation cost is expected to be recognized over a weighted-average period of approximately 3 years.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

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