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		9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share, Basic [Abstract]
Net loss	$ (12,686)	$ (34,899)	$ (52,025)	$ (77,356)
Weighted average shares outstanding - basic (shares)	27,038	26,783	26,969	26,714
Basic EPS (US$ per share)	$ (0.47)	$ (1.30)	$ (1.93)	$ (2.90)
Earnings Per Share, Diluted [Abstract]
Diluted weighted average shares (shares)	27,038	26,783	26,969	26,714
Diluted EPS (US$ per share)	$ (0.47)	$ (1.30)	$ (1.93)	$ (2.90)