Organization and Summary of Significant Accounting Policies - Summary of Activity Product Returns and Discounts and Rebates (Details) $ in Thousands |
6 Months Ended |
|---|---|
|
Jun. 30, 2019
USD ($)
| |
| Balance at December 31, 2018 | $ 81 |
| Provision | 922 |
| Payments/credits | (173) |
| Balance at June 30, 2019 | 830 |
| Product Returns Allowance [Member] | |
| Balance at December 31, 2018 | 33 |
| Provision | 766 |
| Payments/credits | (40) |
| Balance at June 30, 2019 | 759 |
| Discounts and Rebates Allowance [Member] | |
| Balance at December 31, 2018 | 48 |
| Provision | 156 |
| Payments/credits | (133) |
| Balance at June 30, 2019 | $ 71 |