CONSOLIDATED STATEMENT OF EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit	Total Stockholders’ Equity
Beginning Balance (shares) at Dec. 31, 2012		25,853,000
Stockholders' Equity Attributable to Parent	$ 156,582
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock pursuant to the employee stock purchase plan (shares)		39,000
Issuance of common stock pursuant to the employee stock purchase plan		0	298	0	0	298
Issuance of restricted common stock, net of cancellations (shares)		1,223,000
Issuance of restricted common stock, net of cancellations		12	0	0	0	12
Foreign currency translation adjustment	(59)	0	0	(59)	0	(59)
Surrender of restricted common stock for income tax purposes (shares)		(185,000)
Surrender of restricted common stock for income tax purposes		(2)	(1,751)	0	0	(1,753)
Issuance of common stock in connection with the exercise of vested stock options (shares)	(69,000)	69,000
Issuance of common stock in connection with the exercise of vested stock options		1	196	0	0	197
Stock-based compensation		0	4,518	0	0	4,518
Net income	8,862	0	0	0	8,862	8,862
Ending Balance at Sep. 30, 2013		$ 270	$ 167,332	$ (156)	$ (10,864)	$ 156,582
Ending Balance (shares) at Sep. 30, 2013		26,999,000