EQUITY (Details) (USD $)	1 Months Ended		3 Months Ended		6 Months Ended		1 Months Ended	6 Months Ended
	May 31, 2012	Mar. 31, 2012	Jun. 30, 2012 plan	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 2012 Share Repurchase Program	Jun. 30, 2012 2012 Share Repurchase Program	Jun. 30, 2011 2010 Share Repurchase Program
Share Repurchase
Authorized amount under stock repurchase program							$ 35,000,000
Number of plans to be utilized with brokers or banks for pre-authorized purchases			1
Number of shares of common stock repurchased under stock repurchase program								120,000	745,414
Value of common stock repurchased under stock repurchase program					1,444,000	9,958,000		1,400,000	10,000,000
Weighted average cost of common stock repurchased (in dollars per share)								$ 12.04	$ 13.37
Number of common stock repurchased to satisfy employee tax withholding obligations (in Shares)			14,325		169,093	66,290
Value of common stock repurchased to satisfy employee tax withholding obligations			200,000		2,045,000	900,000
Dividend
Cash dividend declared on outstanding shares of common stock (in dollars per share)	$ 0.065	$ 0.05	$ 0.115	$ 0.105	$ 0.115	$ 0.105
Cash dividend paid on outstanding shares of common stock (in dollars per share)	$ 0.05
Dividends payable			$ 2,342,000	$ 1,239,000	$ 2,342,000	$ 1,239,000