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, 2013	$ 295,884		$ 218	$ (34,715)	$ 103,972	$ 223,534	$ 2,875
Beginning balance, Treasury Shares at Dec. 31, 2013	(4,693,647)			(4,693,647)
Beginning balance, Shares at Dec. 31, 2013			21,801,634
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	17,228	[1]				16,303	925
Sale of noncontrolling interest	161				161
Purchase of noncontrolling interest	(359)				(359)
Noncontrolling interest distributions	(904)						(904)
Nonvested stock compensation	3,086				3,086
Issuance of vested stock			174,399
Treasury shares redeemed to pay income tax	(923)			(923)
Treasury shares redeemed to pay income tax, Shares	(39,785)			(39,785)
Excess tax benefits — vesting nonvested stock	64				64
Issuance of common stock under Employee Stock Purchase Plan	575		2		573
Issuance of common stock under Employee Stock Purchase Plan, Shares			26,955
Ending balance, Amount at Sep. 30, 2014	$ 314,812		$ 220	$ (35,638)	$ 107,497	$ 239,837	$ 2,896
Ending balance, Treasury Shares at Sep. 30, 2014	(4,733,432)			(4,733,432)
Ending balance, Shares at Sep. 30, 2014			22,002,988

[1] Net income excludes net income attributable to noncontrolling interest-redeemable of $3.8 million during the nine months ending September 30, 2014. 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.