EARNINGS (LOSS) PER SHARE - Calculation of Earning Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended		36 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2019
Numerator for basic and diluted earnings per share
Net loss	$ (8,378)	$ (11,508)	$ (10,438)	$ (5,288)	$ (19,886)	$ (15,726)	$ (48,600)
Preferred dividends	0		0		(334)	(334)
Net loss applicable to common shares	$ (8,378)		$ (10,438)		$ (20,220)	$ (16,060)
Denominator for basic loss per share - Weighted average shares outstanding (in shares)	63,664,256		60,059,936		61,891,197	60,056,924
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)	63,664,256		60,059,936		61,891,197	60,056,924
Basic loss per share (in dollars per share)	$ (0.13)		$ (0.17)		$ (0.33)	$ (0.27)
Diluted loss per share (in dollars per share)	$ (0.13)		$ (0.17)		$ (0.33)	$ (0.27)