EARNINGS (LOSS) PER SHARE - Calculation of Earning Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Mar. 31, 2020	Mar. 31, 2019
Numerator for basic and diluted earnings per share
Net loss	$ (9,295)	$ (8,378)	$ (11,508)	$ (4,306)	$ (10,438)	$ (5,288)	$ (29,181)	$ (20,032)
Preferred dividends	(334)			(334)			(668)	(668)
Net loss applicable to common shares	$ (9,629)			$ (4,640)			$ (29,849)	$ (20,700)
Denominator for basic loss per share - Weighted average shares outstanding (in shares)	64,096,778			60,065,053			62,591,947	60,059,594
Effect of dilutive potential common shares (in shares)	0			0			0	0
Denominator for diluted loss per share - Adjusted weighted average shares outstanding (in shares)	64,096,778			60,065,053			62,591,947	60,059,594
Basic loss per share (in dollars per share)	$ (0.15)			$ (0.08)			$ (0.48)	$ (0.34)
Diluted loss per share (in dollars per share)	$ (0.15)			$ (0.08)			$ (0.48)	$ (0.34)