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Fair Value - Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Gross Asset | $ 84,974 | $ 36,581
Liability | 74,772 | 74,940
Fair Value, Recurring [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Assets, Fair Value Disclosure | 30,032 | 13,460
Financial Liabilities Fair Value Disclosure | 7,376 | 33,327
Counterparty and Cash Collateral Netting, Assets | (62,781) | (32,524)
Counterparty and Cash Collateral Netting, Liabilities | (67,396) | (41,613)
Fair Value, Recurring [Member] | Fixed Income Funds [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Deferred compensation assets: | 1,442 | 1,809
Fair Value, Recurring [Member] | Equity Funds [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Deferred compensation assets: | 6,397 | 7,594
Fair Value, Recurring [Member] | Energy Commodity Derivatives [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Counterparty and Cash Collateral Netting, Assets | (61,736) | (31,211)
Derivative Asset | 14,246 | 2,908
Counterparty and Cash Collateral Netting, Liabilities | (66,351) | (40,300)
Derivative Liability | 5,021 | 1,433
Fair Value, Recurring [Member] | Interest Rate Swap [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Counterparty and Cash Collateral Netting, Assets |  | (1,170)
Derivative Asset | 7,947 | 1,149
Counterparty and Cash Collateral Netting, Liabilities |  | (1,170)
Derivative Liability |  | 24,104
Fair Value, Recurring [Member] | Natural Gas Exchange Agreements [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Counterparty and Cash Collateral Netting, Assets | (1,045) | (143)
Counterparty and Cash Collateral Netting, Liabilities | (1,045) | (143)
Derivative Liability | 2,289 | 7,771
Fair Value, Recurring [Member] | Foreign Exchange Contract [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Derivative Liability | 66 | 19
Fair Value, Recurring [Member] | Level 1 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Assets, Fair Value Disclosure | 7,839 | 9,403
Fair Value, Recurring [Member] | Level 1 [Member] | Fixed Income Funds [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Deferred compensation assets: | 1,442 | 1,809
Fair Value, Recurring [Member] | Level 1 [Member] | Equity Funds [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Deferred compensation assets: | 6,397 | 7,594
Fair Value, Recurring [Member] | Level 2 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Assets, Fair Value Disclosure | 83,929 | 36,438
Financial Liabilities Fair Value Disclosure | 71,438 | 67,026
Fair Value, Recurring [Member] | Level 2 [Member] | Energy Commodity Derivatives [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Gross Asset | 75,982 | 34,119
Liability | 71,372 | 41,733
Fair Value, Recurring [Member] | Level 2 [Member] | Interest Rate Swap [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Gross Asset | 7,947 | 2,319
Liability |  | 25,274
Fair Value, Recurring [Member] | Level 2 [Member] | Foreign Exchange Contract [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Liability | 66 | 19
Fair Value, Recurring [Member] | Level 3 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Assets, Fair Value Disclosure | 1,045 | 143
Financial Liabilities Fair Value Disclosure | 3,334 | 7,914
Fair Value, Recurring [Member] | Level 3 [Member] | Natural Gas Exchange Agreements [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Gross Asset | 1,045 | 143
Liability | $ 3,334 | $ 7,914

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