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Income Taxes (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Tax Contingency [Line Items] |  |  |
Federal income tax rate | 21.00% | 21.00% | 21.00%
Income tax benefit | $ 753 | $ (2,304) | $ (270)
Net of recovery taxes and excluding interest and penalties | 5,800 |  |
Maximum [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Federal income tax rate |  |  | 35.00%
Minimum [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Federal income tax rate |  |  | 21.00%
Foreign derived intangible income [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Income tax benefit | $ 300 | $ 900 | $ 600

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