CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (Unaudited) - 6 months ended Jun. 30, 2015 - USD ($) $ in Thousands	Total		Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings	Noncontrolling Interest Non Redeemable
Beginning balance, Amount at Dec. 31, 2014	$ 321,595		$ 220	$ (35,660)	$ 108,708	$ 245,371	$ 2,956
Beginning balance, Shares at Dec. 31, 2014			22,015,211
Beginning balance, Treasury Shares at Dec. 31, 2014	(4,734,363)			(4,734,363)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 16,621	[1]				15,755	866
Noncontrolling interest	155						155
Purchase of noncontrolling interest	(275)				(275)
Noncontrolling interest distributions	$ (748)						(748)
Stock options exercised, Shares	9,500
Stock options exercised	$ 145				145
Nonvested stock compensation	2,073				2,073
Issuance of vested stock			169,655
Treasury shares redeemed to pay income tax	$ (1,329)			$ (1,329)
Treasury shares redeemed to pay income tax, Shares	(38,797)			(38,797)
Excess tax benefits — vesting nonvested stock	$ 811				811
Issuance of common stock under Employee Stock Purchase Plan	389		$ 2		387
Issuance of common stock under Employee Stock Purchase Plan, Shares			12,770
Ending balance, Amount at Jun. 30, 2015	$ 339,437		$ 222	$ (36,989)	$ 111,849	$ 261,126	$ 3,229
Ending balance, Shares at Jun. 30, 2015			22,207,136
Ending balance, Treasury Shares at Jun. 30, 2015	(4,773,160)			(4,773,160)

[1] Net income excludes net income attributable to noncontrolling interest-redeemable of $3.8 million during the six months ending June 30, 2015. Noncontrolling interest-redeemable is reflected outside of permanent equity on the condensed consolidated balance sheets. See Note 9 of the Notes to Condensed Consolidated Financial Statements.