Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Deferred income tax valuation allowance	$ 8,625,000	$ 8,373,000
Net long-term deferred income tax asset or liability	0
Net operating loss carry-forward	$ 16,700,000
Net operating loss carryforward expiration year	2023 through fiscal 2038
Discrete net tax benefit		0
Federal tax rate percentage	21.00%
Net tax benefit due to valuation allowance position	$ 0
Provisional estimate	$ 0
Federal alternative minimum tax, tax credits		305,000
Additional income tax expense benefit		40,000
Federal alternative minimum tax, tax credits		$ 296,000
Tax Cuts and Jobs Act, Accounting Complete	true