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	291		291
Issuance of common stock upon exercise of stock options (in shares)	243,000	243,000
Repurchase and retirement of common stock	(1,062)			(1,062)
Repurchase and retirement of common stock (in shares)	(155,000)	(155,000)
Stock-based compensation expense	1,847		1,847
Excess tax benefits from stock-based compensation	3,758		3,758
Non-controlling interests distributions	(578)				(578)
Net (loss) income	(1,214)			(1,520)	306
Balance at Jun. 30, 2013	$ 147,541	$ 4	$ 184,115	$ (37,129)	$ 551
Balance (in shares) at Jun. 30, 2013		35,571,000