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Derivatives and Risk Management - Summary of Foreign Currency Exchange Derivatives (Details) $ in Thousands, $ in Thousands | Sep. 30, 2020 USD ($) derivative_contracts | Sep. 30, 2020 CAD ($) derivative_contracts | Dec. 31, 2019 USD ($) derivative_contracts | Dec. 31, 2019 CAD ($) derivative_contracts
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Foreign Currency Fair Value Hedge Derivative [Line Items] |  |  |  |
Number of contracts | derivative_contracts | 24 | 24 | 20 | 20
United States of America, Dollars [Member] | Foreign Exchange Contract [Member] |  |  |  |
Foreign Currency Fair Value Hedge Derivative [Line Items] |  |  |  |
Notional amount | $ 5,887 |  | $ 5,932 |
Canada, Dollars [Member] | Foreign Exchange Contract [Member] |  |  |  |
Foreign Currency Fair Value Hedge Derivative [Line Items] |  |  |  |
Notional amount |  | $ 7,777 |  | $ 7,828

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