Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Allowance for expiring inventory | |||
| SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] | |||
| Balance | $ 1,117 | $ 461 | $ 272 |
| Additions | 514 | 852 | 223 |
| Deductions (Chargeoffs) | (539) | (196) | (34) |
| Balance | 1,092 | 1,117 | 461 |
| Valuation allowance for deferred tax assets | |||
| SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] | |||
| Balance | 33,876 | 28,357 | 39,111 |
| Additions | 5,977 | 5,519 | |
| Deductions (Chargeoffs) | (10,754) | ||
| Balance | $ 39,853 | $ 33,876 | $ 28,357 |