CONDENSED CONSOLIDATED STATEMENT OF EQUITY (USD $) In Thousands, unless otherwise specified	Total	Total Stockholders’ Equity	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit
Balance at December 31, 2013 at Dec. 31, 2013	$ 155,890	$ 155,890	$ 270	$ 169,756	$ (204)	$ (13,932)
Balance at December 31, 2013 (shares) at Dec. 31, 2013			27,049
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock pursuant to the employee stock purchase plan (shares)			37
Issuance of common stock pursuant to the employee stock purchase plan		374	0	374	0	0
Issuance of restricted common stock, net of cancellations (shares)			100
Issuance of restricted common stock, net of cancellations		1	1	0	0	0
Foreign currency translation adjustment	(44)	(44)	0	0	(44)	0
Surrender of restricted common stock for income tax purposes (shares)			(355)
Surrender of restricted common stock for income tax purposes		(4,370)	(3)	(4,367)	0	0
Issuance of common stock in connection with the exercise of vested stock options (shares)			131
Issuance of common stock in connection with the exercise of vested stock options		523	1	522	0	0
Repurchase of common stock (shares)			(62)
Repurchase of common stock		(615)	0	(386)	0	(229)
Stock-based compensation		4,024	0	4,024	0	0
Excess tax benefits from stock-based awards		1,263	0	1,263	0	0
Net income	4,455	4,455	0	0	0	4,455
Balance at September 30, 2014 at Sep. 30, 2014	$ 161,501	$ 161,501	$ 269	$ 171,186	$ (248)	$ (9,706)