Income Taxes - Additional Information (Details) - USD ($)		6 Months Ended	12 Months Ended
	Mar. 27, 2020	Jun. 30, 2018	Jun. 30, 2020	Jun. 30, 2019
Investments Owned Federal Income Tax Note [Line Items]
Loss before income taxes			$ (8,311,000)	$ (8,392,000)
Effective tax rate for continuing operations			0.00%
Current state tax expense			$ 0	0
Unrecognized tax benefits			$ 0	$ 0
Federal statutory effective tax rate		21.00%	21.00%	21.00%
Tax cuts and jobs act provisional amounts adjusted in income tax expense				$ 509,000
Tax cuts and jobs act provisional amount related to deferred tax assets and liabilities		$ 8,500,000
Valuation allowance			$ 15,900,000
Change in valuation allowance			$ (3,000,000)
Alternative minimum tax credit refunded, percentage			50.00%
Alternative minimum tax credit amount available			$ 0
Net operating loss carryforwards			68,800,000
Net losses carryforwards used for Federal income tax purposes			41,100,000
Federal income tax effected			$ 8,600,000
Percentage of limits on utilization of net operating losses of taxable income			80.00%
Accumulated state net operating loss carryforwards			$ 7,400,000
State income tax effected			300,000
Temporary credit loss carryovers			500,000
Temporary credit tax effected			300,000
Temporary credit offset			13,000
Uncertain tax positions			0	0
Interest expense for uncertain tax positions			$ 0	$ 0
State and Local Jurisdiction
Investments Owned Federal Income Tax Note [Line Items]
Tax credit carryforward expiration year			2027
Earliest Tax Year
Investments Owned Federal Income Tax Note [Line Items]
Operating loss carryforward expiration year			2020
Earliest Tax Year | State and Local Jurisdiction
Investments Owned Federal Income Tax Note [Line Items]
Accumulated operating loss carryforward expiration year			2026
Latest Tax Year
Investments Owned Federal Income Tax Note [Line Items]
Operating loss carryforward expiration year			2037
Latest Tax Year | State and Local Jurisdiction
Investments Owned Federal Income Tax Note [Line Items]
Accumulated operating loss carryforward expiration year			2038
Indefinite Lives
Investments Owned Federal Income Tax Note [Line Items]
Net losses carryforwards used for Federal income tax purposes			$ 27,700,000
Federal income tax effected			5,800,000
CARES Act
Investments Owned Federal Income Tax Note [Line Items]
Refundable tax credit due to AMT credits			$ 429,000
CARES Act | Maximum
Investments Owned Federal Income Tax Note [Line Items]
Percentage of refundable AMT credit	100.00%