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Income Taxes - Provision for Income Tax (Benefit) (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2019 | Dec. 31, 2019 | Dec. 31, 2018
Current: |  |  |
Federal |  |  | $ (57)
State and local |  | $ 30 | 20
Foreign |  | 43 | 156
Total Current |  | 73 | 119
Deferred: |  |  |
Federal | $ 700 | 1,322 | 616
State and local |  | 147 | (86)
Foreign |  | 60 | 46
Total before change in valuation allowance |  | 1,529 | 576
Change in valuation allowance |  | (4,709) | (530)
Net deferred |  | (3,180) | 46
Income tax (benefit) provision |  | $ (3,107) | $ 165

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