Organization and Summary of Significant Accounting Policies - Summary of Activity Product Returns and Discounts and Rebates (Details) $ in Thousands |
9 Months Ended |
|---|---|
|
Sep. 30, 2019
USD ($)
| |
| Balance at December 31, 2018 | $ 81 |
| Provision | 870 |
| Payments/credits | (201) |
| Balance at June 30, 2019 | 750 |
| Product Returns Allowance [Member] | |
| Balance at December 31, 2018 | 33 |
| Provision | 681 |
| Payments/credits | (50) |
| Balance at June 30, 2019 | 664 |
| Discounts and Rebates Allowance [Member] | |
| Balance at December 31, 2018 | 48 |
| Provision | 189 |
| Payments/credits | (151) |
| Balance at June 30, 2019 | $ 86 |