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Fair Value - Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Gross Asset | $ 74,665 | $ 36,581
Liability | 46,146 | 74,940
Fair Value, Recurring [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Assets, Fair Value Disclosure | 31,278 | 13,460
Financial Liabilities Fair Value Disclosure | 6,739 | 33,327
Counterparty and Cash Collateral Netting, Assets | (52,077) | (32,524)
Counterparty and Cash Collateral Netting, Liabilities | (39,407) | (41,613)
Fair Value, Recurring [Member] | Fixed Income Funds [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Deferred compensation assets: | 1,658 | 1,809
Fair Value, Recurring [Member] | Equity Funds [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Deferred compensation assets: | 7,032 | 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 | (51,898) | (31,211)
Derivative Asset | 18,641 | 2,908
Counterparty and Cash Collateral Netting, Liabilities | (39,228) | (40,300)
Derivative Liability | 542 | 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 | 3,801 | 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 | (179) | (143)
Counterparty and Cash Collateral Netting, Liabilities | (179) | (143)
Derivative Liability | 6,197 | 7,771
Fair Value, Recurring [Member] | Foreign Exchange Contract [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Derivative Asset | 146 |
Derivative Liability |  | 19
Fair Value, Recurring [Member] | Level 1 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Assets, Fair Value Disclosure | 8,690 | 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: | 1,658 | 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: | 7,032 | 7,594
Fair Value, Recurring [Member] | Level 2 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Assets, Fair Value Disclosure | 74,486 | 36,438
Financial Liabilities Fair Value Disclosure | 39,770 | 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 | 70,539 | 34,119
Liability | 39,770 | 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 | 3,801 | 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] |  |
Gross Asset | 146 |
Liability |  | 19
Fair Value, Recurring [Member] | Level 3 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Assets, Fair Value Disclosure | 179 | 143
Financial Liabilities Fair Value Disclosure | 6,376 | 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 | 179 | 143
Liability | $ 6,376 | $ 7,914

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