Commitments and Contingencies - Additional Information (Detail) - USD ($) |
3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
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| Commitments And Contingencies [Line Items] | ||||
| Operating lease remaining lease term | 2 years 6 months | 2 years 6 months | ||
| Operating lease beginning date | Mar. 01, 2014 | |||
| Operating lease ending date | Jul. 31, 2019 | |||
| Rent expense | $ 50,000 | $ 25,000 | $ 97,000 | $ 44,000 |
| Minimum [Member] | ||||
| Commitments And Contingencies [Line Items] | ||||
| Operating lease remaining lease term | 1 year | 1 year | ||
| Maximum [Member] | ||||
| Commitments And Contingencies [Line Items] | ||||
| Operating lease remaining lease term | 3 years | 3 years | ||
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- Definition Commitments and contingencies. No definition available.
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- Definition Lease contract beginning date. No definition available.
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- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. No definition available.
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- Definition Date which lease or group of leases is set to expire, in CCYY-MM-DD format. No definition available.
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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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