Income Taxes - Differences Between Income Taxes on Continuing Operations at Federal Statutory Rate and Effective Tax Rate (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Income tax expense (benefit) at Federal statutory rate	$ (61)	$ (436)
Changes in valuation allowance—continuing operations	(369)	378
U.S. state income taxes, net of federal benefit	175	(45)
Permanent differences under CARES Act	582	0
Deferred tax rate changes	(34)	32
Other	3	(11)
Total income tax expense (benefit)	$ 296	$ (82)