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DEBT - Additional Information (Details)			3 Months Ended		9 Months Ended
	Aug. 31, 2015 USD ($)	Jan. 16, 2015 USD ($) Tranche	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)
Debt Instrument [Line Items]
Amortization of debt discount recorded as interest expense					$ 170,822	$ 270,944
Loan and Security Agreement | Term Loan
Debt Instrument [Line Items]
Aggregate principal amount		$ 15,000,000						$ 5,000,000
Number of tranches | Tranche		2
Additional loan amount not borrowed							$ 5,000,000
Facility fee payment		$ 75,000
Final payment of term loan		5.10%
Amortization of debt discount recorded as interest expense			$ 100,000	$ 100,000	$ 200,000	300,000
Term loans maturity date					Aug. 01, 2018
Advance notice period to the lenders					30 days
Term loan prepayment fee terms					(i) 3% of the outstanding balance, if the loan is prepaid within 24 months of the funding date, (ii) 2% of the outstanding balance, if the loan is prepaid between 24 and 36 months of the funding date and (iii) 1% of the outstanding balance, if the loan is prepaid thereafter (each, a “Prepayment Fee”).
Loan and Security Agreement | Term Loan | Mind-NRG, Sarl
Debt Instrument [Line Items]
Percentage of equity interests			65.00%		65.00%
Loan and Security Agreement | Term Loan | 24 months
Debt Instrument [Line Items]
Proportion of prepayment fees on outstanding balance					3.00%
Loan and Security Agreement | Term Loan | Between 24 and 36 months
Debt Instrument [Line Items]
Proportion of prepayment fees on outstanding balance					2.00%
Loan and Security Agreement | Term Loan | Prepaid Thereafter
Debt Instrument [Line Items]
Proportion of prepayment fees on outstanding balance					1.00%
Loan and Security Agreement | Term Loan | Term A Loans
Debt Instrument [Line Items]
Amount drew dawn during period		$ 10,000,000
Interest rate (as a percent)		7.05%
Minimum capital requirement	$ 30,000,000
Sale of equity securities	$ 20,000,000
Extended interest period for debt instrument					6 months
Reduced repayment period for debt instrument					6 months
Number of installments period					24 months
Interest expense			$ 100,000	$ 300,000	$ 500,000	$ 800,000

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Ownership interest percentage in an Investment that is pledged.

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Amount of the cost of borrowed funds accounted for as interest expense.

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