Earnings Per Share - Schedule of Earnings Per Share. Basic and Dilutive (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Numerator:
Income from continuing operations	$ 34,895	$ 12,036
Loss from discontinued operations, net of tax	(10)	(39)
Net income	$ 34,885	$ 11,997
Denominator:
Basic weighted-average shares (in shares)	30,336	29,771
Dilutive effect of restricted stock awards (in shares)	379	294
Dilutive effect of stock options (in shares)	9	21
Dilutive weighted-average shares (in shares)	30,724	30,086
Basic income per share:
Continuing Operations (in USD per share)	$ 1.15	$ 0.40
Discontinued operations (in USD per share)	0	0
Total (in USD per share)	1.15	0.40
Diluted income per share:
Continuing operations (in USD per share)	1.14	0.40
Discontinued operations (in USD per share)	0	0
Total (in USD per share)	$ 1.14	$ 0.40