Investments - Summary of Proceeds and Realized Gains and Losses Classified as Available-for-sale (Details) - Available For Sale Securities - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2017 |
|
| Proceeds and realized gains and losses recognized | ||
| Sale Proceeds | $ 158 | $ 79 |
| Realized gains | $ 6 | $ 15 |