Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Numerator:
Net income	$ 8,739	$ 9,061	$ (1,217)	$ (2,846)	$ 3,261	$ (2,041)	$ (225)	$ (364)	$ 13,737	$ 631	$ 16,660
Denominator:
Weighted average basic shares (in shares)									11,797	11,705	11,624
Dilutive effect of restricted stock units (in shares)									146	84	69
Weighted average diluted shares (in shares)									11,943	11,789	11,693
Earnings per share:
Basic (in dollars per share)	$ 0.74	$ 0.77	$ (0.10)	$ (0.24)	$ 0.28	$ (0.17)	$ (0.02)	$ (0.03)	$ 1.16	$ 0.05	$ 1.43
Diluted (in dollars per share)	$ 0.73	$ 0.76	$ (0.10)	$ (0.24)	$ 0.28	$ (0.17)	$ (0.02)	$ (0.03)	$ 1.15	$ 0.05	$ 1.42