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v3.20.2

Financial Instruments and Risk Management (Narrative) (Details) mmbtus in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 USD ($) mmbtus | Jun. 30, 2019 USD ($) | Jun. 30, 2020 USD ($) mmbtus | Jun. 30, 2019 USD ($) | Dec. 31, 2019 USD ($) mmbtus
Derivative [Line Items] |  |  |  |  |
Foreign currency cash flow hedges losses expected to be recognized in the next 12 months | $ 600,000 |  | $ 600,000 |  |
Level 1 to level 2 transfers | 0 |  | 0 |  | $ 0
Currency Swap |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, notional amount |  | $ 166,200,000 |  | $ 166,200,000 |
Derivative, fair value, net | 7,600,000 |  | 7,600,000 |  | 3,000,000.0
Interest and dividend | 500,000 | $ 600,000 | 1,300,000 | $ 600,000 |
Currency Swap | US Dollar Denominated |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, fixed interest rate |  | 3.79% |  | 3.79% |
Currency Swap | Eurodollar |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, fixed interest rate |  | 1.35% |  | 1.35% |
Currency exchange contracts |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, notional amount | 10,200,000 |  | 10,200,000 |  |
Derivative asset | 100,000 |  | 100,000 |  | 0
Commodity hedging |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, fair value, net | $ (300,000) |  | $ (300,000) |  | $ (500,000)
Commodity hedging | Swap |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, nonmonetary notional amount | mmbtus | 1.4 |  | 1.4 |  |
Commodity hedging | Zero Cost Collar |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, nonmonetary notional amount | mmbtus |  |  |  |  | 0.6
Interest rate swap contracts |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, notional amount | $ 166,200,000 |  | $ 166,200,000 |  |
Derivative, fair value, net | $ (10,400,000) |  | $ (10,400,000) |  | $ (3,900,000)

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