CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY - USD ($) $ in Thousands	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, 2013		$ 218	$ (34,715)	$ 103,972	$ 223,534	$ 2,875	$ 295,884	$ 11,258
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
Noncontrolling interest acquired						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, shares		177,272
Treasury shares redeemed to pay income tax			$ (945)				(945)
Treasury shares redeemed to pay income tax, shares	(40,716)		(40,716)
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	36,305
Balances, Amount at Dec. 31, 2014		$ 220	$ (35,660)	108,708	245,371	2,956	321,595	11,517
Balances, Shares at Dec. 31, 2014		22,015,211	4,734,363
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income					32,335	1,737	34,072	7,578
Income from continuing operations	$ 41,650								41,650
Noncontrolling interest acquired						155	155
Noncontrolling interest distributions						(1,637)	(1,637)	(6,687)
Stock options exercised, Shares		9,500
Stock options exercised				144			144
Purchase of additional controlling interest				(275)			(275)
Nonvested Stock Compensation				4,225			4,225
Issuance of vested stock, shares		176,989
Treasury shares redeemed to pay income tax			$ (1,479)				(1,479)
Treasury shares redeemed to pay income tax, shares	(42,197)		(42,197)
Excess tax benefits-vesting nonvested stock				211			211
Issuance of common stock under Employee Stock Purchase Plan		$ 2		780			782
Shares Issued during Period (Shares)	22,723	22,723
Balances, Amount at Dec. 31, 2015	$ 357,793	$ 222	$ (37,139)	113,793	277,706	3,211	357,793	12,408
Balances, Shares at Dec. 31, 2015		22,224,423	4,776,560
Ending Balance, Treasury Shares at Dec. 31, 2015	(4,776,560)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income					36,583	1,373	37,956	7,986
Income from continuing operations	$ 45,942								$ 45,942
Noncontrolling interest acquired						1,783	1,783
Noncontrolling interest distributions						(1,341)	(1,341)	(7,827)
Stock options exercised, Shares	(5,500)	5,500
Stock options exercised				109			109
Sale of noncontrolling interest				(931)		1,400	469
Nonvested Stock Compensation				4,872			4,872
Issuance of vested stock		$ 2		(2)
Issuance of vested stock, shares		174,969
Treasury shares redeemed to pay income tax			$ (1,996)				(1,996)
Treasury shares redeemed to pay income tax, shares	(52,119)		(52,119)
Excess tax benefits-vesting nonvested stock				995			995
Issuance of common stock under Employee Stock Purchase Plan				912			912
Shares Issued during Period (Shares)	24,149	24,149
Balances, Amount at Dec. 31, 2016	$ 401,552	$ 224	$ (39,135)	$ 119,748	$ 314,289	$ 6,426	$ 401,552	$ 12,567
Balances, Shares at Dec. 31, 2016		22,429,041	4,828,679
Ending Balance, Treasury Shares at Dec. 31, 2016	(4,828,679)