EQUITY (Details) (USD $)	0 Months Ended	12 Months Ended
	Sep. 18, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 01, 2012	Nov. 06, 2013
Share Repurchases
Value of shares of common stock repurchased under stock repurchase program			$ 22,881,000	$ 3,299,000
Number of common stock repurchased to satisfy employee tax withholding obligations (in Shares)		323,090	471,248	217,713
Value of common stock repurchased to satisfy employee tax withholding obligations		3,982,000	6,515,000	2,689,000
Dividend
Cash dividends declared on outstanding shares of common stock (in dollars per share)		$ 0.36	$ 0.36	$ 0.385
Total dividends declared		13,000,000	12,800,000	13,800,000
Cash dividends paid on outstanding shares of common stock (in dollars per share)		$ 0.36	$ 0.36	$ 0.345
Total dividends paid		12,793,000	12,891,000	12,386,000
Shareholder Rights Agreement
Preferred stock purchase right dividend declared	1
Number of preferred shares callable by each right	0.001
Preferred stock purchase right consideration	$ 40.00
Preferred stock purchace rights the Board may reedem per right	0.001
Minimum percent of beneficial ownership of common stock acquired for preferred stock rights to become exercisable under the agreement	10.00%
Preferred stock purchase right dilutive effect on earnings	0
2012 Program
Share Repurchases
Authorized amount under stock repurchase program					35,000,000
Number of shares of common stock repurchased under stock repurchase program			1,768,296	283,980
Value of shares of common stock repurchased under stock repurchase program			22,900,000	3,300,000
Weighted average cost of common stock repurchased (in dollars per share)			$ 12.94	$ 11.62
2014 Share Repurchase Program
Share Repurchases
Authorized amount under stock repurchase program						$ 35,000,000
Number of shares of common stock repurchased under stock repurchase program		0
Minimum number of plans to be utilized with brokers or banks for pre-authorized purchases			1