Income Taxes (Narrative) (Detail) - USD ($)	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Income Taxes [Line Items]
Unrecognized Tax Benefits, Interest on Income Taxes Accrued		$ 0
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		27.60%	34.00%
Increase (Decrease) in Deferred Income Taxes		$ 136,000
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount		381,000
Unrecognized Tax Benefits, Period Increase (Decrease)		38,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate		221,000
Undistributed Earnings of Foreign Subsidiaries		19,700,000
Effective Income Tax Rate Reconciliation, Tax Contingency, Foreign, Amount		$ 256,000	$ 0
Scenario, Forecast [Member]
Income Taxes [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Tax Year 2018 [Member]
Income Taxes [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		27.55%