Consolidated Statements Of Stockholders’ Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]	Total
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-based 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-based 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
Net income				29,463	29,463
Other comprehensive income (loss)			(1,194)		(1,194)
Issuance of common stock from exercise of stock options, restricted stock units, and employee stock purchase plan, net	$ 2	4,390			4,392
Issuance of common stock from exercise of stock options, restricted stock units, and employee stock purchase plan, net, shares	1,111,000
Compensation related to stock-based awards		4,588			4,588
Repurchase of common stock	$ (2)			(12,809)	$ (12,811)
Repurchase of common stock, shares	(1,526,000)				(1,526,306)
Balance at Dec. 31, 2015	$ 50	$ 296,086	$ 2,070	$ (118,494)	$ 179,712
Balance, shares at Dec. 31, 2015	49,534,000