Consolidated Statements Of Stockholders’ Equity (USD $) In Thousands, except Share data	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]	Total
Balance at Dec. 31, 2011	$ 58	$ 266,913	$ 2,344	$ (119,196)	$ 150,119
Balance, shares at Dec. 31, 2011	57,847,000
Net income				9,620	9,620
Other comprehensive income (loss)			644		644
Issuance of common stock from exercise of stock options, restricted stock units, and employee stock purchase plan, net	1	3,491			3,492
Issuance of common stock from exercise of stock options, restricted stock units, and employee stock purchase plan, net, shares	1,346,000
Compensation related to stock option awards		3,983			3,983
Repurchase of common stock	(5)			(24,831)	(24,836)
Repurchase of common stock, shares	(4,709,000)				(4,709,651)
Balance at Dec. 31, 2012	54	274,387	2,988	(134,407)	143,022
Balance, shares at Dec. 31, 2012	54,484,000
Net income				10,964	10,964
Other comprehensive income (loss)			1,188		1,188
Escrow shares received in settlement and immediately retired		(1,866)			(1,866)
Escrow shares received in settlement and immediately retired, shares	(342,000)
Issuance of common stock from exercise of stock options, restricted stock units, and employee stock purchase plan, net		1,705			1,705
Issuance of common stock from exercise of stock options, restricted stock units, and employee stock purchase plan, net, shares	634,000
Compensation related to stock option awards		4,101			4,101
Repurchase of common stock	(2)			(12,517)	(12,519)
Repurchase of common stock, shares	(2,404,000)				(2,404,034)
Balance at Dec. 31, 2013	52	278,327	4,176	(135,960)	146,595
Balance, shares at Dec. 31, 2013	52,372,000
Net income				25,208	25,208
Other comprehensive income (loss)			(912)		(912)
Issuance of common stock from exercise of stock options, restricted stock units, and employee stock purchase plan, net	2	5,212			5,214
Issuance of common stock from exercise of stock options, restricted stock units, and employee stock purchase plan, net, shares	1,399,000
Compensation related to stock option awards		3,569			3,569
Repurchase of common stock	(4)			(24,396)	(24,400)
Repurchase of common stock, shares	(3,822,000)				(3,822,434)
Balance at Dec. 31, 2014	$ 50	$ 287,108	$ 3,264	$ (135,148)	$ 155,274
Balance, shares at Dec. 31, 2014	49,949,000