Net Income (Loss) Per Share Data - Denominator for Computation of Diluted Weighted Average Shares Outstanding (Detail) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share [Abstract]
Basic weighted average shares outstanding	14,050	13,929	14,020	13,907
Dilutive effect of outstanding stock options, non-vested restricted stock, and non-vested restricted stock units	22
Diluted weighted average shares outstanding	14,072	13,929	14,020	13,907