Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Federal statutory income tax rate	21.00%	28.10%	35.00%
One-time benefit on re-measurement of net deferred tax liability		$ 9,500
Tax benefits recorded directly to common stock			$ 1,100
Gross tax contingency reserve	$ 1,670	1,298	$ 1,808
Accrued tax liabilities included in the gross tax contingency reserve	1,000
Accrued interest and penalties included in the gross tax contingency reserve	669	605
Gross tax contingency reserve, classified as current liabilities	800
Gross tax contingency reserve, classified as noncurrent liabilities	942	1,298
Federal [Member]
Income Tax Authority [Line Items]
Prepaid income taxes	5,200	3,600
State and Local [Member]
Income Tax Authority [Line Items]
Prepaid income taxes	$ 100	$ 900