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RESTRUCTURING EXPENSE (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Changes in restructuring liabilities
Restructuring charges (reversals)	$ 0us-gaap_RestructuringCharges	$ 0us-gaap_RestructuringCharges	$ 0us-gaap_RestructuringCharges	$ 360us-gaap_RestructuringCharges	$ 0us-gaap_RestructuringCharges	$ 0us-gaap_RestructuringCharges	$ 39us-gaap_RestructuringCharges	$ 432us-gaap_RestructuringCharges	$ 360us-gaap_RestructuringCharges	$ 471us-gaap_RestructuringCharges	$ (76)us-gaap_RestructuringCharges
Lease and contract termination costs
Changes in restructuring liabilities
Balance at the beginning of the period				445				1,197	445	1,197
Accretion Expense									7	71
Net Cash Payments									(92)	(352)
Restructuring charges (reversals)									(360)	(471)
Balance at the end of the period	$ 0				$ 445				$ 0	$ 445