Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2019
Numerator:
Net income from continuing operations	$ 11,061		$ 11,626		$ 10,946	$ 23,917
Net loss from discontinued operations	(25,255)		(260)		(36,959)	(1,021)
Net (loss) income	$ (14,194)	$ (11,819)	$ 11,366	$ 11,530	$ (26,013)	$ 22,896
Denominator:
Weighted-average shares, basic (in shares)	25,395,000		25,274,000		25,378,000	25,407,000
Dilutive effect of share-based payments (in shares)	80,000		84,000		80,000	81,000
Weighted-average shares, diluted (in shares)	25,475,000		25,358,000		25,458,000	25,488,000
Net income from continuing operations per common share, basic (in dollars per share)	$ 0.44		$ 0.46		$ 0.43	$ 0.94
Net loss from discontinued operations per common share, basic (in dollars per share)	(1.00)		(0.01)		(1.46)	(0.04)
Net (loss) income per common share, basic (in dollars per share)	(0.56)		0.45		(1.03)	0.90
Net income from continuing operations per common share, diluted (in dollars per share)	0.43		0.46		0.43	0.94
Net loss from discontinued operations per common share, diluted (in dollars per share)	(0.99)		(0.01)		(1.45)	(0.04)
Net (loss) income per common share, diluted (in dollars per share)	$ (0.56)		$ 0.45		$ (1.02)	$ 0.90
Weighted average shares excluded from the computation of diluted earnings per share (in shares)	1,400,999		975,907		1,191,985	961,980