Commitments and Contingencies - Narrative (Details) - USD ($) |
3 Months Ended | 9 Months Ended | |||
---|---|---|---|---|---|
Sep. 30, 2019 |
Sep. 30, 2018 |
Sep. 30, 2019 |
Sep. 30, 2018 |
Dec. 31, 2018 |
|
Other Commitments [Line Items] | |||||
Rent expense | $ 300,000 | $ 300,000 | $ 900,000 | $ 900,000 | |
Purchase commitments related to inventory | 300,000 | 300,000 | $ 200,000 | ||
Accrued litigation expense | 2,500,000 | 2,500,000 | $ 0 | ||
Indemnification Agreement | |||||
Other Commitments [Line Items] | |||||
Costs to defend lawsuits or settle claims | 0 | ||||
Costs accrued to defend lawsuits | $ 0 | $ 0 | |||
Santa Clara, California | |||||
Other Commitments [Line Items] | |||||
Non-cancelable operating lease term | 7 years | 7 years |