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v3.19.3

Commitment and Contingencies - Narrative (Details) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 USD ($) ft² leaseExtention | Sep. 30, 2018 USD ($) | Sep. 30, 2019 USD ($) ft² leaseExtention | Sep. 30, 2018 USD ($) | Dec. 31, 2018 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |
Rent expense | $ 100,000 | $ 100,000 | $ 300,000 | $ 300,000 |
Minimum annual purchase commitment |  |  | $ 3,250,000 |  |
Purchase commitment, term |  |  | 3 years |  |
Minimum | Licensing Agreements |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Royalty obligation, percent of net sales | 3.00% |  | 3.00% |  |
Maximum |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Royalty obligation, percent of net sales | 20.00% |  | 20.00% |  |
Prometheus Laboratories |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Remaining milestone obligation | $ 2,000,000.0 |  | $ 2,000,000.0 |  |
Remaining milestone obligation, fair value | 0 |  | 0 |  | $ 0
Advance royalties payment | $ 100,000 |  | $ 100,000 |  |
Prometheus Laboratories | Minimum |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Royalty obligation, percent of net sales | 2.50% |  | 2.50% |  |
Prometheus Laboratories | Maximum |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Royalty obligation, percent of net sales | 7.50% |  | 7.50% |  |
Future minimum royalty commitment | $ 4,200,000 |  | $ 4,200,000 |  |
Office and Laboratory |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Operating lease, rentable area (square feet) | ft² | 14,000 |  | 14,000 |  |
Number of operating lease extensions | leaseExtention | 2 |  | 2 |  |
Operating lease, renewal term | 36 months |  | 36 months |  |
Office |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Operating lease, rentable area (square feet) | ft² | 19,500 |  | 19,500 |  |
Operating lease, renewal term | 24 months |  | 24 months |  |

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