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Income Taxes - Additional Information (Details) - USD ($)		3 Months Ended		9 Months Ended
	Mar. 27, 2020	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Income Tax [Line Items]
Loss before income taxes		$ (2,068,000)	$ (2,252,000)	$ (6,219,000)	$ (6,650,000)
Effective tax rate for continuing operations		0.00%	0.00%	0.00%	0.00%
Federal statutory effective tax rate				21.00%	21.00%
Income tax effects		$ 0	$ (858,000)	$ 0	$ (858,000)
Unrecognized tax benefits		$ 0	$ 0	$ 0	$ 0
CARES Act
Income Tax [Line Items]
Percentage of refundable AMT alternative minimum tax	100.00%
Refundable tax credit due to AMT credits	$ 429,000
Income tax effects	$ 0

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