Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Numerator:
Net income	$ 6,727	$ 4,126	$ 18,405	$ 8,160
Denominator:
Denominator for basic net income per common share — weighted average shares outstanding	35,889,000	35,131,000	35,761,000	34,900,000
Effect of dilutive securities:
Stock options and restricted stock units	928,000	609,000	1,077,000	840,000
Denominator for diluted net income per common share — adjusted weighted average shares	36,817,000	35,740,000	36,838,000	35,740,000
Basic net income per common share:
Net income, basic (USD per share)	$ 0.19	$ 0.12	$ 0.51	$ 0.23
Diluted net income per common share
Net income , diluted (USD per share)	$ 0.18	$ 0.12	$ 0.50	$ 0.23
Potentially dilutive securities excluded from computation of earnings per share	599,957	939,101	477,521	778,573