CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	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, Treasury Shares at Dec. 31, 2014	(4,734,363)			(4,734,363)
Beginning balance, Shares at Dec. 31, 2014			22,015,211
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	7,212	[1]				6,805	407
Acquired noncontrolling interest	126						126
Noncontrolling interest distributions	(412)						(412)
Nonvested stock compensation	991				991
Issuance of vested stock			146,424
Treasury shares redeemed to pay income tax	(1,122)			(1,122)
Treasury shares redeemed to pay income tax, Shares	(33,207)			(33,207)
Excess tax benefits — vesting nonvested stock	642				642
Issuance of common stock under Employee Stock Purchase Plan	210		2		208
Issuance of common stock under Employee Stock Purchase Plan, Shares	7,068		7,068
Ending balance, Amount at Mar. 31, 2015	$ 329,242		$ 222	$ (36,782)	$ 110,549	$ 252,176	$ 3,077
Ending balance, Treasury Shares at Mar. 31, 2015	(4,767,570)			(4,767,570)
Ending balance, Shares at Mar. 31, 2015			22,168,703

[1] Net income excludes net income attributable to noncontrolling interest-redeemable of $1.6 million during the three months ending March 31, 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.