Earnings Per Share - Calculations of Net Loss Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share And Equity [Abstract]
Net loss	$ (9,090)	$ (14,274)
Basic weighted average common shares outstanding	36,378	35,963
Add: Incremental shares for:
Diluted weighted average common shares outstanding	36,378	35,963
Net loss per share attributable to common shareholders
Basic	$ (0.25)	$ (0.40)
Diluted	$ (0.25)	$ (0.40)