Equity Incentive Plans (Tables)

6 Months Ended

Jun. 30, 2013

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Option Activity under its Stock Plans

During the six months ended June 30, 2013, 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, 2012		1,567,902			5,292,738		$	7.38
Shares authorized		1,450,000
Granted		(159,075	)		159,075			13.20
Exercised		0			(562,057	)		3.58
Forfeited		16,234			(16,234	)		9.19
Balance at June 30, 2013		2,875,061			4,873,522		$	8.00		6.59 years	$	30,144,051