Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]
Balance at Dec. 31, 2009	$ 80,793	$ 1,002	$ (176)	$ 53,675	$ 1,607	$ 23,210	$ 1,475
Common Stock, Shares at Dec. 31, 2009		15,786,913
Treasury Stock, Shares at Dec. 31, 2009			(44,578)
Net income	16,223	0	0		0	16,203	20
Change in unrealized gains (losses), net of tax	754	0	0	0	686	0	68
Comprehensive income	16,977	0	0	0	686	16,203	88
Change in par value		(844)		844
Stock-based compensation shares		160,000
Stock-based compensation	176	2	0	174	0	0	0
Redemption of minority interest	(860)	0	0	0	0	0	(860)
Options exercised, net of forfeitures, shares		44,185
Options exercised, net of forfeitures	203	0	0	203	0	0	0
Conversion of Class A common stock	(14,105)	0	0	0	0	(14,105)	0
Issuance of common stock, shares		4,265,637
Issuance of common stock	40,703	43	0	40,660	0	0	0
Balance at Dec. 31, 2010	123,887	203	(176)	95,556	2,293	25,308	703
Common Stock, Shares at Dec. 31, 2010	20,256,735	20,256,735
Treasury Stock, Shares at Dec. 31, 2010	(44,578)		(44,578)
Net income	9,145	0	0	0	0		(171)
Net Income (Loss) Attributable to Parent	9,316					9,316
Unrealized gain (loss) on swap, net of tax	(2,145)	0	0	0	(2,145)	0	0
Change in unrealized gains (losses), net of tax	(860)	0	0	0	(864)	0	4
Comprehensive income	6,140	0	0	0	(3,009)	9,316	(167)
Stock-based compensation	615	0	0	615	0	0	0
Options exercised, net of forfeitures, shares		317,995
Options exercised, net of forfeitures	651	3	0	648	0	0	0
Initial public offering costs	(826)	0	0	(826)	0	0	0
Balance at Sep. 30, 2011	$ 130,467	$ 206	$ (176)	$ 95,993	$ (716)	$ 34,624	$ 536
Common Stock, Shares at Sep. 30, 2011	20,574,730	20,574,730
Treasury Stock, Shares at Sep. 30, 2011	(44,578)		(44,578)