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Fair Value Measurements. (Details) - Schedule of recurring and nonrecurring fair value measurements - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Assets: |  |  |
Asset |  | $ 20,498 | $ 36,826
Derivative Financial Instruments, Liabilities [Member] |  |  |
Assets: |  |  |
Asset |  | 19,498 | 15,839
Liabilities: |  |  |
Liabilities |  | (27,487) | (13,582)
Long-lived assets held-for-sale [Member] |  |  |
Assets: |  |  |
Asset |  | 1,000 | 1,000
Large U.S. Equity [Member] |  |  |
Assets: |  |  |
Asset | [1],[2] |  | $ 5,612
Benefit Plan Percentage Allocation | [1],[2] |  | 28.00%
Small/Mid U.S. Equity [Member] |  |  |
Assets: |  |  |
Asset | [1],[3] |  | $ 3,684
Benefit Plan Percentage Allocation | [1],[3] |  | 18.00%
International Equity [Member] |  |  |
Assets: |  |  |
Asset | [1],[4] |  | $ 2,909
Benefit Plan Percentage Allocation | [1],[4] |  | 15.00%
Fixed Income [Member] |  |  |
Assets: |  |  |
Asset | [1],[5] |  | $ 7,782
Benefit Plan Percentage Allocation | [1],[5] |  | 39.00%
Level 1 [Member] |  |  |
Assets: |  |  |
Asset |  | 19,498 | $ 15,839
Level 1 [Member] | Derivative Financial Instruments, Liabilities [Member] |  |  |
Assets: |  |  |
Asset |  | 19,498 | 15,839
Liabilities: |  |  |
Liabilities |  | (27,487) | (13,582)
Level 1 [Member] | Long-lived assets held-for-sale [Member] |  |  |
Assets: |  |  |
Asset |  |  |
Level 1 [Member] | Large U.S. Equity [Member] |  |  |
Assets: |  |  |
Asset | [1],[2] |  |
Level 1 [Member] | Small/Mid U.S. Equity [Member] |  |  |
Assets: |  |  |
Asset | [1],[3] |  |
Level 1 [Member] | International Equity [Member] |  |  |
Assets: |  |  |
Asset | [1],[4] |  |
Level 1 [Member] | Fixed Income [Member] |  |  |
Assets: |  |  |
Asset | [1],[5] |  |
Level 2 [Member] |  |  |
Assets: |  |  |
Asset |  |  | 19,987
Level 2 [Member] | Derivative Financial Instruments, Liabilities [Member] |  |  |
Assets: |  |  |
Asset |  |  |
Liabilities: |  |  |
Liabilities |  |  |
Level 2 [Member] | Long-lived assets held-for-sale [Member] |  |  |
Assets: |  |  |
Asset |  |  |
Level 2 [Member] | Large U.S. Equity [Member] |  |  |
Assets: |  |  |
Asset | [1],[2] |  | 5,612
Level 2 [Member] | Small/Mid U.S. Equity [Member] |  |  |
Assets: |  |  |
Asset | [1],[3] |  | 3,684
Level 2 [Member] | International Equity [Member] |  |  |
Assets: |  |  |
Asset | [1],[4] |  | 2,909
Level 2 [Member] | Fixed Income [Member] |  |  |
Assets: |  |  |
Asset | [1],[5] |  | 7,782
Level 3 [Member] |  |  |
Assets: |  |  |
Asset |  | 1,000 | 1,000
Level 3 [Member] | Derivative Financial Instruments, Liabilities [Member] |  |  |
Assets: |  |  |
Asset |  |  |
Liabilities: |  |  |
Liabilities |  |  |
Level 3 [Member] | Long-lived assets held-for-sale [Member] |  |  |
Assets: |  |  |
Asset |  | $ 1,000 | 1,000
Level 3 [Member] | Large U.S. Equity [Member] |  |  |
Assets: |  |  |
Asset | [1],[2] |  |
Level 3 [Member] | Small/Mid U.S. Equity [Member] |  |  |
Assets: |  |  |
Asset | [1],[3] |  |
Level 3 [Member] | International Equity [Member] |  |  |
Assets: |  |  |
Asset | [1],[4] |  |
Level 3 [Member] | Fixed Income [Member] |  |  |
Assets: |  |  |
Asset | [1],[5] |  |
[1] | Included in other assets in the consolidated balance sheets.
[2] | This category includes investments in funds comprised of equity securities of large U.S. companies. The funds are valued using the net asset value method in which an average of the market prices for the underlying investments is used to value the fund.
[3] | This category includes investments in funds comprised of equity securities of small- and medium-sized U.S. companies. The funds are valued using the net asset value method in which an average of the market prices for the underlying investments is used to value the fund.
[4] | This category includes investments in funds comprised of equity securities of foreign companies including emerging markets. The funds are valued using the net asset value method in which an average of the market prices for the underlying investments is used to value the fund.
[5] | This category includes investments in funds comprised of U.S. and foreign investment-grade fixed income securities, high-yield fixed income securities that are rated below investment-grade, U.S. treasury securities, mortgage-backed securities, and other asset-backed securities. The funds are valued using the net asset value method in which an average of the market prices for the underlying investments is used to value the fund.

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