Income Taxes (Narrative) (Detail) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Taxes [Line Items]
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	$ 0		$ 0
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount						$ 381,000
Unrecognized Tax Benefits, Period Increase (Decrease)				$ 35,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	256,000		$ 256,000
Income Tax Expense (Benefit)	520,000	$ 64,000	1,187,000	$ 118,000
Deferred Tax Liabilities, Tax Deferred Income	1,800,000		1,800,000
Deferred Tax Liabilities	$ 442,000		$ 442,000
Deferred Income Tax Liability Payable period	8 years
Scenario, Forecast [Member]
Income Taxes [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent					35.00%