Organization and Summary of Significant Accounting Policies (Details) $ in Thousands |
3 Months Ended |
|---|---|
|
Mar. 31, 2019
USD ($)
| |
| Balance at December 31, 2018 | $ 81 |
| Provision | 866 |
| Payments/credits | (60) |
| Balance at March 31, 2019 | 887 |
| Product Returns Allowance [Member] | |
| Balance at December 31, 2018 | 33 |
| Provision | 744 |
| Payments/credits | (24) |
| Balance at March 31, 2019 | 753 |
| Discounts and Rebates Allowance [Member] | |
| Balance at December 31, 2018 | 48 |
| Provision | 122 |
| Payments/credits | (36) |
| Balance at March 31, 2019 | $ 134 |