STOCKHOLDERS' EQUITY - Weighted average summary of quantitative information (Detail) - Share Purchase Warrants [Member]	Jun. 30, 2018	Jun. 30, 2017
Measurement Input, Exercise Price [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrants and Rights Outstanding, Measurement Input	8.67	1.20
Measurement Input, Expected Term [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrants and Rights Outstanding, Term	1 year 3 months 25 days	1 year 11 days
Measurement Input, Price Volatility [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrants and Rights Outstanding, Measurement Input	83	78
Measurement Input, Risk Free Interest Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrants and Rights Outstanding, Measurement Input	1	1
Measurement Input, Expected Dividend Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrants and Rights Outstanding, Measurement Input	0	0
Weighted Average Inputs Before Modification [Member] | Measurement Input, Exercise Price [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrants and Rights Outstanding, Measurement Input	9.93
Weighted Average Inputs Before Modification [Member] | Measurement Input, Expected Term [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrants and Rights Outstanding, Term	2 years 4 months 13 days
Weighted Average Inputs Before Modification [Member] | Measurement Input, Price Volatility [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrants and Rights Outstanding, Measurement Input	79
Weighted Average Inputs Before Modification [Member] | Measurement Input, Risk Free Interest Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrants and Rights Outstanding, Measurement Input	1.5
Weighted Average Inputs Before Modification [Member] | Measurement Input, Expected Dividend Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrants and Rights Outstanding, Measurement Input	0
Weighted Average Inputs After Modification [Member] | Measurement Input, Exercise Price [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrants and Rights Outstanding, Measurement Input		2.50
Weighted Average Inputs After Modification [Member] | Measurement Input, Expected Term [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrants and Rights Outstanding, Term		2 years 4 months 13 days
Weighted Average Inputs After Modification [Member] | Measurement Input, Price Volatility [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrants and Rights Outstanding, Measurement Input		79
Weighted Average Inputs After Modification [Member] | Measurement Input, Risk Free Interest Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrants and Rights Outstanding, Measurement Input		1.5
Weighted Average Inputs After Modification [Member] | Measurement Input, Expected Dividend Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Warrants and Rights Outstanding, Measurement Input		0