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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% |  |  |

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