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DEBT - Additional Information (Details)			1 Months Ended	3 Months Ended
	Aug. 01, 2018 USD ($)	Jan. 16, 2015 USD ($) Tranche	Aug. 31, 2018 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)
Debt Instrument [Line Items]
Amortization of debt discount recorded as interest expense					$ 24,252
Loan and Security Agreement | Term Loan
Debt Instrument [Line Items]
Aggregate principal amount		$ 15,000,000
Number of tranches | Tranche		2
Facility fee payment		$ 75,000
Final payment of term loan		5.10%
Term loan final payment amount	$ 510,000		$ 510,000
Term loans maturity date				Aug. 01, 2018
Borrowings outstanding				$ 0
Amortization of debt discount recorded as interest expense				0	24,000
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%
Interest expense				$ 0	$ 100,000

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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