Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Numerator:
Net income	$ 3,994	$ 5,899	$ 940	$ 11,678
Denominator:
Denominator for basic net income per common share — weighted average shares outstanding	36,296,000	35,791,000	36,212,000	35,698,000
Effect of dilutive securities:
Stock options and restricted stock units	678,000	939,000	643,000	1,123,000
Denominator for diluted net income per common share — adjusted weighted average shares	36,974,000	36,730,000	36,855,000	36,821,000
Basic net income per common share:
Earnings Per Share, Basic	$ 0.11	$ 0.16	$ 0.03	$ 0.33
Diluted net income per common share
Diluted (USD per share)	$ 0.11	$ 0.16	$ 0.03	$ 0.32
Potentially dilutive securities excluded from computation of earnings per share	583,062	609,017	676,465	416,307