Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements. (Details) - Schedule of recurring and nonrecurring fair value measurements

v3.22.0.1
Fair Value Measurements. (Details) - Schedule of recurring and nonrecurring fair value measurements - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Assets:    
Asset $ 36,826 $ 93,032
Derivative Financial Instruments, Assets [Member]    
Assets:    
Asset 15,839 17,149
Long-lived assets held-for-sale [Member]    
Assets:    
Asset 1,000 58,295
Large U,S Equity [Member]    
Assets:    
Asset [1],[2] $ 5,612 $ 5,470
Benefit Plan Percentage Allocation [1],[2] 28.00% 31.00%
Small/Mid U.S Equity [Member]    
Assets:    
Asset [1],[3] $ 3,684 $ 2,605
Benefit Plan Percentage Allocation [1],[3] 18.00% 15.00%
International Equity [Member]    
Assets:    
Asset [1],[4] $ 2,909 $ 2,921
Benefit Plan Percentage Allocation [1],[4] 15.00% 17.00%
Fixed Income [Member]    
Assets:    
Asset [1],[5] $ 7,782 $ 6,592
Benefit Plan Percentage Allocation [1],[5] 39.00% 37.00%
Derivative Financial Instruments, Liabilities [Member]    
Liabilities:    
Liabilities $ 13,582
Fair Value, Inputs, Level 1 [Member]    
Assets:    
Asset 15,839 17,149
Fair Value, Inputs, Level 1 [Member] | Derivative Financial Instruments, Assets [Member]    
Assets:    
Asset 15,839 17,149
Fair Value, Inputs, Level 1 [Member] | Long-lived assets held-for-sale [Member]    
Assets:    
Asset
Fair Value, Inputs, Level 1 [Member] | Large U,S Equity [Member]    
Assets:    
Asset [1],[2]
Fair Value, Inputs, Level 1 [Member] | Small/Mid U.S Equity [Member]    
Assets:    
Asset [1],[3]
Fair Value, Inputs, Level 1 [Member] | International Equity [Member]    
Assets:    
Asset [1],[4]
Fair Value, Inputs, Level 1 [Member] | Fixed Income [Member]    
Assets:    
Asset [1],[5]
Fair Value, Inputs, Level 1 [Member] | Derivative Financial Instruments, Liabilities [Member]    
Liabilities:    
Liabilities 13,582
Fair Value, Inputs, Level 2 [Member]    
Assets:    
Asset 19,987 17,588
Fair Value, Inputs, Level 2 [Member] | Derivative Financial Instruments, Assets [Member]    
Assets:    
Asset
Fair Value, Inputs, Level 2 [Member] | Long-lived assets held-for-sale [Member]    
Assets:    
Asset
Fair Value, Inputs, Level 2 [Member] | Large U,S Equity [Member]    
Assets:    
Asset [1],[2] 5,612 5,470
Fair Value, Inputs, Level 2 [Member] | Small/Mid U.S Equity [Member]    
Assets:    
Asset [1],[3] 3,684 2,605
Fair Value, Inputs, Level 2 [Member] | International Equity [Member]    
Assets:    
Asset [1],[4] 2,909 2,921
Fair Value, Inputs, Level 2 [Member] | Fixed Income [Member]    
Assets:    
Asset [1],[5] 7,782 6,592
Fair Value, Inputs, Level 2 [Member] | Derivative Financial Instruments, Liabilities [Member]    
Liabilities:    
Liabilities
Fair Value, Inputs, Level 3 [Member]    
Assets:    
Asset 1,000 58,295
Fair Value, Inputs, Level 3 [Member] | Derivative Financial Instruments, Assets [Member]    
Assets:    
Asset
Fair Value, Inputs, Level 3 [Member] | Long-lived assets held-for-sale [Member]    
Assets:    
Asset 1,000 58,295
Fair Value, Inputs, Level 3 [Member] | Large U,S Equity [Member]    
Assets:    
Asset [1],[2]
Fair Value, Inputs, Level 3 [Member] | Small/Mid U.S Equity [Member]    
Assets:    
Asset [1],[3]
Fair Value, Inputs, Level 3 [Member] | International Equity [Member]    
Assets:    
Asset [1],[4]
Fair Value, Inputs, Level 3 [Member] | Fixed Income [Member]    
Assets:    
Asset [1],[5]
Fair Value, Inputs, Level 3 [Member] | Derivative Financial Instruments, Liabilities [Member]    
Liabilities:    
Liabilities
[1] See Note 9 for accounting discussion.
[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.