Earnings Per Share - Reconciliation of Components of Basic and Diluted EPS Calculations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Numerator:
Net income (loss)	$ 970	$ 3,204	$ (8,388)	$ 460
Denominator:
Weighted-average shares used to compute basic EPS	14,197	14,028	14,193	14,018
Weighted-average shares used to compute diluted EPS	14,209	14,157	14,193	14,142
Net income (loss) per basic share	$ 0.07	$ 0.23	$ (0.59)	$ 0.03
Net income (loss) per diluted share	$ 0.07	$ 0.23	$ (0.59)	$ 0.03
Stock Options
Denominator:
Dilutive potential common shares		128		124
RSU
Denominator:
Dilutive potential common shares	12	1