Earnings per Common Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share, Basic [Abstract]
Net loss	$ (4,591)	$ (28,008)	$ (7,628)	$ (21,857)
Weighted average shares outstanding - basic (shares)	26,489	26,925	26,377	26,930
Basic EPS (US$ per share)	$ (0.17)	$ (1.04)	$ (0.29)	$ (0.81)
Earnings Per Share, Diluted [Abstract]
Diluted weighted average shares (shares)	26,489	26,925	26,377	26,930
Diluted EPS (US$ per share)	$ (0.17)	$ (1.04)	$ (0.29)	$ (0.81)