Earnings Per Share - Schedule of Earnings Per Share. Basic and Dilutive (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Numerator:
(Loss) income from continuing operations	$ 15,270	$ 11,625	$ 28,689	$ (81,885)
Loss from discontinued operations, net of tax	(82)	(23)	(141)	(64)
Net income (loss)	$ 15,188	$ 11,602	$ 28,548	$ (81,949)
Denominator:
Basic weighted-average shares (in shares)	29,597	30,250	29,738	30,926
Dilutive effect of restricted stock awards (in shares)	76	225	267	0
Dilutive effect of stock options (in shares)	1	14	9	0
Dilutive weighted-average shares (in shares)	29,674	30,489	30,014	30,926
Basic income (loss) per share:
Continuing Operations (in dollars per share)	$ 0.51	$ 0.38	$ 0.96	$ (2.65)
Discontinued operations (in dollars per share)	0	0	0	0
Total (in dollars per share)	0.51	0.38	0.96	(2.65)
Diluted income (loss) per share:
Continuing operations (in dollars per share)	0.51	0.38	0.95	(2.65)
Discontinued operations (in dollars per share)	0	0	0	0
Total (in dollars per share)	$ 0.51	$ 0.38	$ 0.95	$ (2.65)