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Commitments and Contingencies (Narrative) (Detail) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017
Employment Contracts [Member] | Chief executive officer [Member] |  |  |  |
Property Subject to or Available for Operating Lease [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 Contracts [Member] | Senior Vice President of Sales and Marketing [Member] |  |  |  |
Property Subject to or Available for Operating Lease [Line Items] |  |  |  |
Expiration Year |  |  | 2019 |
Annual salary commitment |  |  | $ 334,000 |
Employment Contracts [Member] | Senior Vice President of Engineering [Member] |  |  |  |
Property Subject to or Available for Operating Lease [Line Items] |  |  |  |
Expiration Year |  |  | 2019 |
Annual salary commitment |  |  | $ 302,000 |
Land lease in Dominican Republic expiring 2092 [Member] |  |  |  |
Property Subject to or Available for Operating Lease [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] |  |  |  |
Property Subject to or Available for Operating Lease [Line Items] |  |  |  |
Rent expense | $ 12,000 | $ 7,000 | $ 23,000 | $ 13,000

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- Definition The rate applied to the most recent 5-year average of annual salaries, as defined, to calculate termination pay the entity has committed to pay under specified circumstances. + References No definition available. + Details
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- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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