Intangible Assets Other Than Goodwill - Additional Details (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2020 |
Jun. 30, 2019 |
Jun. 30, 2020 |
Jun. 30, 2019 |
|
| Amortization of intangible assets | $ 1,394 | $ 1,395 | $ 2,787 | $ 2,780 |