Earnings Per Common Share - Computation of Basic and Diluted Loss Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Net loss	$ (9,629)	$ (8,109)
Net loss attributable to common shares	$ (9,629)	$ (8,109)
Weighted average number of common shares outstanding basic	44,955	44,490
Weighted average number of common shares outstanding diluted	44,955	44,490
Net loss per common share basic	$ (0.21)	$ (0.18)
Net loss per common share diluted	$ (0.21)	$ (0.18)