Summary of Significant Accounting Policies and New Accounting Standards (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Summary of Significant Accounting Policies and New Accounting Standards
Net income	$ 12,302	$ 2,515
Weighted average number of shares - basic (in shares)	40,454	40,454
Dilutive effect of stock options and restricted stock units	50	50
Weighted average number of shares - diluted (in shares)	40,504	40,504
Net income per share
basic (in dollars per share)	$ 0.30	$ 0.06
diluted (in dollars per share)	$ 0.30	$ 0.06