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Commitments and Contingencies - Narrative (Details) ft² in Thousands, $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2017 USD ($) ft² renewal_term | Jun. 30, 2016 USD ($)
Operating Leased Assets [Line Items] |  |
Rent expense | $ | $ 0.4 | $ 0.4
1st Detect |  |
Operating Leased Assets [Line Items] |  |
Number of renewal terms | renewal_term | 2 |
Renewal term | 5 years |
Period before expiration of lease that renewal contract must be signed | 6 months |
Austin, Texas |  |
Operating Leased Assets [Line Items] |  |
Leased premises (sq feet) | 5 |
Number of renewal terms | renewal_term | 1 |
Renewal term | 5 years |
Period before expiration of lease that renewal contract must be signed | 8 months |
Webster, Texas Property One | 1st Detect |  |
Operating Leased Assets [Line Items] |  |
Leased premises (sq feet) | 17 |
Webster, Texas Property Two | 1st Detect |  |
Operating Leased Assets [Line Items] |  |
Leased premises (sq feet) | 9 |
Astral Images, Inc | Austin, Texas |  |
Operating Leased Assets [Line Items] |  |
Leased premises (sq feet) | 4 |

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- Definition Represents number of renewal terms. + References No definition available. + Details
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- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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