Investments (Details) - Available For Sale Securities - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |
|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2019 |
Dec. 31, 2018 |
|
| Investments | |||
| Cost | $ 670 | $ 670 | $ 666 |
| Gross unrealized gains | 59 | 59 | 6 |
| Gross unrealized losses | (7) | (7) | (71) |
| Available-for-sale securities, at fair value | 722 | 722 | $ 601 |
| Proceeds and realized gains and losses recognized | |||
| Sale Proceeds | 104 | 104 | |
| Realized gains | $ 4 | $ 4 |