CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock [Member]	Treasury [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Non-controlling Interest Non Redeemable [Member]	Total Equity [Member]	Non-Controlling Interest - Redeemable [Member]	Net Income (Loss) [Member]
Balances, Amount at Dec. 31, 2011		$ 183	$ (6,216)	$ 95,964	$ 173,752	$ 3,051	$ 266,734	$ 11,348
Balances, Shares at Dec. 31, 2011		21,374,264	3,075,605
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income					27,440	595	28,035	7,393
Income from continuing operations	35,428								35,428
Acquired noncontrolling interest	1,636						1,636
Noncontrolling interest distributions						(1,249)	(1,249)	(7,195)
Purchase of additional controlling interest				(189)			(189)	(120)
Sale of noncontrolling interest				80			80
Nonvested Stock Compensation				4,390			4,390
Issuance of vested stock		154,323
Treasury shares redeemed to pay income tax	(672)		(672)				(672)
Repurchase of Common Stock	(26,958)						(26,958)
Treasury shares redeemed to pay income tax, shares	(36,621)		(36,621)
Repurchase of common stock, shares	1,540,813
Excess tax benefits-vesting nonvested stock				(376)			(376)
Issuance of common stock under Employee Stock Purchase Plan		1		782			783
Shares Issued during Period (Shares)	50,185.0	50,185.0
Reclassification of common stock at par value	(32)			(32)
Balances, Amount at Dec. 31, 2012		216	(33,846)	100,619	201,192	4,033	272,214	11,426
Balances, Shares at Dec. 31, 2012		21,578,772	4,653,039
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income					22,342	1,244	23,586	5,560
Income from continuing operations	29,146								29,146
Acquired noncontrolling interest								608
Noncontrolling interest distributions						(1,060)	(1,060)	(7,066)
Purchase of additional controlling interest				(1,267)			(1,267)	(612)
Nonvested Stock Compensation				3,886			3,886
Issuance of vested stock		184,403
Treasury shares redeemed to pay income tax			(869)				(869)
Treasury shares redeemed to pay income tax, shares	(40,608)		(40,608)
Excess tax benefits-vesting nonvested stock				(50)			(50)
Issuance of common stock under Employee Stock Purchase Plan		2		784			786
Shares Issued during Period (Shares)	38,459.0	38,459.0
Transfer of noncontrolling interest						(1,342)	(1,342)	1,342
Balances, Amount at Dec. 31, 2013	295,884	218	(34,715)	103,972	223,534	2,875	295,884	11,258
Ending Balance, Treasury Shares at Dec. 31, 2013	(4,693,647)
Balances, Shares at Dec. 31, 2013		21,801,634	4,693,647
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income					21,837	1,214	23,051	5,701
Income from continuing operations	28,752								28,752
Acquired noncontrolling interest	138						138	130
Noncontrolling interest distributions						(1,271)	(1,271)	(5,572)
Purchase of additional controlling interest				(359)			(359)
Sale of noncontrolling interest				161			161
Nonvested Stock Compensation				4,094			4,094
Issuance of vested stock		177,272
Treasury shares redeemed to pay income tax			(945)				(945)
Treasury shares redeemed to pay income tax, shares	(40,716)		(40,716)
Repurchase of common stock, shares	0
Excess tax benefits-vesting nonvested stock				(60)			(60)
Issuance of common stock under Employee Stock Purchase Plan		2		780			782
Shares Issued during Period (Shares)	36,305.0	36,305.0
Balances, Amount at Dec. 31, 2014	$ 321,595	$ 220	$ (35,660)	$ 108,708	$ 245,371	$ 2,956	$ 321,595	$ 11,517
Ending Balance, Treasury Shares at Dec. 31, 2014	(4,734,363)
Balances, Shares at Dec. 31, 2014		22,015,211	4,734,363