Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2012

Summary of Option Activity

Information regarding option activity for the six months ended June 30, 2012 under the Plans is summarized below:

	Options Outstanding			Weighted- Average Exercise Price Per Share		Weighted- Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value
Options outstanding at January 1, 2012		2,823,400		$	4.05
Granted		94,190			1.89
Exercised		(217,500	)		2.65
Forfeited/Cancelled		(70,600	)		4.31
Options outstanding at June 30, 2012		2,629,490		$	4.08		5.95	$	1,713,058
Options exercisable at June 30, 2012		1,678,700		$	4.34		4.61	$	926,194
Vested and expected to vest at June 30, 2012 (1)		2,506,271		$	4.09		5.85	$	1,647,742

(1) This represents the number of vested options as of June 30, 2012 plus the number of unvested options expected to vest as of June 30, 2012 based on the unvested outstanding options at June 30, 2012 adjusted for estimated forfeiture rates of 8% for awards granted to non-executive level employees and 3% for awards granted to executive level employees.