FAIR VALUE MEASUREMENTS - Schedule of reconciliation of opening and closing balances for fair value measurements categorized within Level 3 (Details) - Contingent Consideration Liabilities [Member] - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018
Convertible Note Derivative Liability
Beginning balance	$ 5,700	$ 5,480	$ 5,368
Payments/Settlements	(180)		(100)
Accretion expense	229	220	212
Valuation adjustment	(213)
Ending balance	$ 5,536	$ 5,700	$ 5,480