COMMITMENTS AND CONTINGENCIES - Narrative (Details) - USD ($) $ in Thousands	Aug. 21, 2017	Aug. 20, 2017	Dec. 31, 2016	Aug. 19, 2016	Mar. 31, 2016	Nov. 30, 2011
Commitments and Contingencies Disclosure [Line Items]
Contingent purchase consideration			$ 5,410		$ 7,293
Simena
Commitments and Contingencies Disclosure [Line Items]
Contingent purchase consideration						$ 8,000
Present value of future consideration			$ 4,800
Avvasi
Commitments and Contingencies Disclosure [Line Items]
Contingent purchase consideration				$ 660
Forecast | Avvasi
Commitments and Contingencies Disclosure [Line Items]
Contingent purchase consideration	$ 660	$ 660