Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2013

Stock-Based Compensation

Summary of stock option activity

A summary of stock option activity during the six months ended June 30, 2013 is as follows (in thousands, except for per share amounts):

	Shares		Weighted- Average Exercise Price (in dollars per share)		Weighted- Average Contractual Life (In Years)	Aggregate Intrinsic Value
Options outstanding at December 31, 2012	3,899		$	3.10
Granted	—		—
Exercised	(12	)	1.10
Cancelled	(8	)	3.22
Options outstanding at June 30, 2013	3,879		$	3.11	7.58	$	1,568
Options exercisable at June 30, 2013	2,078		$	2.57	6.82	$	1,505
Options vested or expected to vest at June 30, 2013	3,727		$	3.08	7.54	$	1,565