Equity Incentive Plans (Tables)

6 Months Ended

Jun. 30, 2014

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Option Activity under its Stock Plans

During the six months ended June 30, 2014, the Company had the following option activities under its equity incentive plans :

				Outstanding Options
	Available for Grant			Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value
Balance at December 31, 2013		2,383,920			5,301,622		$	8.71
Shares authorized		1,700,000
Granted (1)		(2,414,935	)		2,279,800			6.63
Exercised		—			(372,890	)		3.60
Forfeited		163,277			(163,277	)		8.55
Balance at June 30, 2014		1,832,262			7,045,255		$	8.31		7.36	$	1,977,347

(1) The difference between the number of shares available for grant and shares outstanding represents the RSUs granted for the period.