SUBSEQUENT EVENTS SUBSEQUENT EVENTS (Details) - USD ($)	2 Months Ended	12 Months Ended
	Feb. 26, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Jan. 14, 2016	May. 07, 2014	Jan. 11, 2010
Subsequent Event [Line Items]
Value of common stock authorized to be repurchased						$ 10,000,000.0	$ 10,000,000
Purchase of treasury stock (in shares)		5,250	99,345	180,453
Value of Treasury Stock Acquired		$ 218,000	$ 2,610,000	$ 3,321,000
Remaining Authorized Repurchase Amount		$ 7,300,000
Subsequent event
Subsequent Event [Line Items]
Value of common stock authorized to be repurchased					$ 50,000,000.0
Purchase of treasury stock (in shares)	573,370
Value of Treasury Stock Acquired	$ 40,000,000
Remaining Authorized Repurchase Amount	$ 57,300,000