LOSS PER SHARE - Calculation of Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Mar. 31, 2021	Mar. 31, 2020
Numerator for basic and diluted earnings per share
Net loss	$ (1,848)	$ (2,902)	$ (6,613)	$ (9,295)	$ (8,378)	$ (11,508)	$ (11,363)	$ (29,181)
Preferred dividends	334			334			668	668
Net loss applicable to common shares	$ (2,182)			$ (9,629)			$ (12,031)	$ (29,849)
Denominator for basic loss per share - Weighted average shares outstanding (in shares)	67,112,511			64,096,778			65,617,458	62,591,947
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)	67,112,511			64,096,778			65,617,458	62,591,947
Basic loss per share (in dollars per share)	$ (0.03)			$ (0.15)			$ (0.18)	$ (0.48)
Diluted loss per share (in dollars per share)	$ (0.03)			$ (0.15)			$ (0.18)	$ (0.48)