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		9 Months Ended
		Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Numerator:
Net income (loss)		$ 106	$ 438	$ (31,394)	$ (7,950)
Denominator:
Weighted-average shares used to compute basic EPS		14,314	14,209	14,294	14,198
Weighted-average shares used to compute diluted EPS		14,314	14,254	14,294	14,198
Net income (loss) per basic share		$ 0.01	$ 0.03	$ (2.2)	$ (0.56)
Net income (loss) per diluted share		$ 0.01	$ 0.03	$ (2.2)	$ (0.56)
Employee Stock Option
Denominator:
Dilutive potential common shares	[1]		5
RSU
Denominator:
Dilutive potential common shares	[1]		40

[1] The number of common stock equivalents is calculated using the treasury method and the average market price during the period.