Condensed Consolidated Statement of Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Non-controlling Interests
Balance at Dec. 31, 2012	$ 144,499	$ 4	$ 178,219	$ (34,547)	$ 823
Balance (in shares) at Dec. 31, 2012		35,483,000
Increase (Decrease) in Stockholders' Equity
Issuance of common stock upon exercise of stock options	540		540
Issuance of common stock upon exercise of stock options (in shares)	374,000	374,000
Repurchase and retirement of common stock	(2,556)			(2,556)
Repurchase and retirement of common stock (in shares)	(362,000)	(362,000)
Stock-based compensation expense	3,199		3,199
Excess tax benefits from stock-based compensation	2,459		2,459
Non-controlling interests distributions	(598)				(598)
Net (loss) income	(690)			(1,166)	476
Balance at Sep. 30, 2013	$ 146,853	$ 4	$ 184,417	$ (38,269)	$ 701
Balance (in shares) at Sep. 30, 2013		35,495,000