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v3.19.3.a.u2

Fair Value Measurements (Details) - Recurring - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Assets: |  |
Marketable securities - available for sale | $ 11,125 | $ 32,754
Assets - fair value | 11,125 | 32,754
Level 1 |  |
Assets: |  |
Marketable securities - available for sale | 0 | 0
Assets - fair value | 0 | 0
Level 2 |  |
Assets: |  |
Marketable securities - available for sale | 11,125 | 32,754
Assets - fair value | 11,125 | 32,754
Level 3 |  |
Assets: |  |
Marketable securities - available for sale | 0 | 0
Assets - fair value | $ 0 | $ 0

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