Condensed Consolidated Statement of Changes in Equity (Unaudited) (USD $) In Thousands, except Share data	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Retained Earnings	Non-controlling Interest Non Redeemable
Beginning balances at Dec. 31, 2011	$ 266,734	$ 183	$ (6,216)	$ 95,964	$ 173,752	$ 3,051
Beginning balances, shares at Dec. 31, 2011		21,374,264	(3,075,605)
Net income	14,000				13,704	296
Sale of noncontrolling interest	80			80
Purchase of additional controlling interest	(38)			(38)
Noncontrolling interest distributions	(614)					(614)
Nonvested stock compensation	2,387			2,387
Issuance of vested stock		132,676
Treasury shares redeemed to pay income tax, value	(562)		(562)
Treasury shares redeemed to pay income tax, shares			(30,435)
Repurchase of Common Stock Value	(4,001)		(4,001)
Repurchase of Common Stock Shares	(236,961)		(236,961)
Excess tax benefits - vesting nonvested stock	(316)			(316)
Issuance of common stock under Employee Stock Purchase Plan, shares		27,874
Issuance of common stock under Employee Stock Purchase Plan, value	407	1		406
Ending balances at Jun. 30, 2012	$ 278,077	$ 184	$ (10,779)	$ 98,483	$ 187,456	$ 2,733
Ending balances, shares at Jun. 30, 2012		21,534,814	(3,343,001)