COMMITMENTS AND CONTINGENCIES, Fair Value (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Loss from increase in fair value of contingent consideration liabilities	$ 131	$ 125
Cash Consideration One | Fair Value, Inputs, Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance as of January 1, 2016	21,831
Fair value at March 31, 2016	21,962
Cash Consideration One | Selling, general and administrative | Fair Value, Inputs, Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Loss from increase in fair value of contingent consideration liabilities	$ 131