Schedule II Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
SEC Schedule, 12-09, Allowance, Credit Loss
Movement in Valuation Allowances [Roll Forward]
Valuation Allowances, Balance at Beginning of Year	$ 270	$ 482	$ 284
Valuation Allowances, Additions to Expense	265	184	259
Valuation Allowances, Adjustments to Other Accounts	(5)	14	(51)
Valuation Allowances, Write-offs and Recoveries	(7)	(410)	(10)
Valuation Allowances, Balance at End of Year	523	270	482
Deferred Tax Asset
Movement in Valuation Allowances [Roll Forward]
Valuation Allowances, Balance at Beginning of Year	658	638	0
Valuation Allowances, Additions to Expense	979	20	638
Valuation Allowances, Adjustments to Other Accounts	0	0	0
Valuation Allowances, Write-offs and Recoveries	0	0	0
Valuation Allowances, Balance at End of Year	$ 1,637	$ 658	$ 638