Income Taxes - Settlements, etc. (Details) - USD ($)	3 Months Ended		12 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Income taxes
Income Tax Expense (Benefit)			$ 2,247,000	$ 2,514,000	$ 2,261,000
Unrecognized, period increase (decrease)			25,000
Unrecognized interest, total	$ 63,000		88,000	$ 63,000	83,000	$ 0
Unrecognized, future period			678,000
Provision for incremental Income tax liability			613,000
Undistributed earnings, foreign subsidiaries			$ 71,600,000
Tax Year 2017
Income taxes
Examination, interest expense	$ 68,000
Domestic Tax Authority | Tax Year 2016
Income taxes
Penalties and interest accrual					762,000
Domestic Tax Authority | Tax Year 2017
Income taxes
Penalties and interest expense		$ 399,000
State Jurisdiction | Tax Year 2016
Income taxes
Penalties and interest accrual					$ 70,000
State Jurisdiction | Tax Year 2017
Income taxes
Penalties and interest expense		$ 97,000