COMMITMENTS AND CONTINGENCIES - Narrative (Details) - USD ($) $ in Thousands	Aug. 20, 2017	Sep. 30, 2016	Aug. 19, 2016	Mar. 31, 2016	Nov. 30, 2011
Commitments and Contingencies Disclosure [Line Items]
Contingent purchase consideration		$ 9,282		$ 7,293
Simena
Commitments and Contingencies Disclosure [Line Items]
Contingent purchase consideration					$ 8,000
Present value of future consideration		4,700
Avvasi
Commitments and Contingencies Disclosure [Line Items]
Contingent purchase consideration			$ 660
Forecast | Avvasi
Commitments and Contingencies Disclosure [Line Items]
Contingent purchase consideration	$ 660
Vesting after August 4, 2015 | Contingently returnable consideration, cash retention award | Accounts payable
Commitments and Contingencies Disclosure [Line Items]
Contingent purchase consideration		$ 3,900