Commitments and Contingencies - Additional Information (Details) - USD ($)		3 Months Ended		9 Months Ended
	Jul. 01, 2019	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020	Jun. 30, 2020
Lessee, Lease, Description [Line Items]
Lease, Practical Expedients, Package [true false]	true
Operating lease asset	$ 7,700,000	$ 7,379,000		$ 7,379,000		$ 7,395,000
Operating lease liability	$ 7,700,000
Operating Lease Payments		72,000	$ 72,000	216,000	$ 240,000
Employment Agreements [Member] | Chief executive officer [Member]
Lessee, Lease, Description [Line Items]
Annual salary commitment				$ 752,000
Termination pay commitment rate applied to the average of the prior five calendar years compensation				299.00%
Employment Agreements [Member] | Senior Vice President of Engineering [Member]
Lessee, Lease, Description [Line Items]
Annual salary commitment				$ 334,000
Employment and Severance Agreements [Member] | Senior Vice President of Engineering [Member]
Lessee, Lease, Description [Line Items]
Expiration Year				2022
Land lease in Dominican Republic expiring 2092 [Member]
Lessee, Lease, Description [Line Items]
Expiration Year				2092
Annual minimum rent		$ 288,000		$ 288,000
Lessee, Operating Lease, Term of Contract		99 years		99 years
Leased property and equipment, excluding foreign land [Member]
Lessee, Lease, Description [Line Items]
Operating lease expense		$ 78,000	$ 79,000	$ 236,000	$ 237,000