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, 2020	Dec. 31, 2019
Numerator:
Income from continuing operations	$ 12,036	$ 2,804
Loss from discontinued operations, net of tax	(39)	(58)
Net income	$ 11,997	$ 2,746
Denominator:
Basic weighted-average shares (in shares)	29,771	29,746
Dilutive effect of restricted stock awards (in shares)	294	353
Dilutive effect of stock options (in shares)	21	39
Dilutive weighted-average shares (in shares)	30,086	30,138
Basic income (loss) per share:
Continuing Operations (in dollars per share)	$ 0.40	$ 0.09
Discontinued operations (in dollars per share)	0	0
Total (in dollars per share)	0.40	0.09
Diluted income (loss) per share:
Continuing operations (in dollars per share)	0.40	0.09
Discontinued operations (in dollars per share)	0	0
Total (in dollars per share)	$ 0.40	$ 0.09