Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Mar. 31, 2022	Mar. 31, 2021
Numerator:
Net income from continuing operations	$ 23,526			$ 13,786			$ 68,751	$ 24,732
Net (loss) income from discontinued operations	0			(688)			100	(37,647)
Net income (loss)	$ 23,526	$ 23,252	$ 22,073	$ 13,098	$ (14,194)	$ (11,819)	$ 68,851	$ (12,915)
Denominator:
Weighted-average shares, basic (in shares)	25,635,000			25,455,000			25,577,000	25,404,000
Dilutive effect of share-based payments (in shares)	218,000			117,000			235,000	80,000
Weighted-average shares, diluted (in shares)	25,853,000			25,572,000			25,812,000	25,484,000
Net income from continuing operations per common share, basic (in dollars per share)	$ 0.92			$ 0.54			$ 2.69	$ 0.97
Net loss from discontinued operations per common share, basic (in dollars per share)	0			(0.03)			0	(1.48)
Net income (loss) per common share, basic (in dollars per share)	0.92			0.51			2.69	(0.51)
Net income from continuing operations per common share, diluted (in dollars per share)	0.91			0.54			2.66	0.97
Net loss from discontinued operations per common share, diluted (in dollars per share)	0			(0.03)			0	(1.48)
Net income (loss) per common share, diluted (in dollars per share)	$ 0.91			$ 0.51			$ 2.67	$ (0.51)
Weighted average shares excluded from the computation of diluted earnings per share (in shares)	429,605			1,532,961			969,871	1,285,153