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Employee Benefit Plans, Defined Benefit Post-Retirement Plans (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Defined benefit plan disclosure [Abstract]      
Transition obligation period of recognition 20 years    
Assumptions used to determine benefit obligations [Abstract]      
Expected long-term return on plan assets 6.70% 6.70% 7.00%
Rate of compensation increase 3.00% 3.00% 3.00%
Interest rate of credit for cash balance plan 3.99% 1.94% 1.62%
Assumptions used to determine net periodic pension cost [Abstract]      
Expected long-term return on plan assets 6.70% 7.00% 7.00%
Rate of compensation increase 3.00% 3.00% 3.00%
Interest rate of credit for cash balance plan 1.94% 1.62% 2.28%
Other changes in plan assets and benefit obligation recognized in OCI (pre-tax) [Abstract]      
Net loss (gain) $ 14,292 $ (3,780) $ (429)
Amortization of unrecognized net loss $ (3,573) $ 945 $ 107
Estimate future benefit payments [Abstract]      
Ultimate health care cost trend rate 4.00%    
Actual plan asset allocations [Abstract]      
Actual plan asset allocations 100.00% 100.00%  
Minimum [Member]      
Assumptions used to determine benefit obligations [Abstract]      
Discount rate 5.54% 3.23% 3.08%
Assumptions used to determine net periodic pension cost [Abstract]      
Discount rate 3.23% 3.08% 3.69%
Estimate future benefit payments [Abstract]      
Annual rates of increase in the per capita cost of covered medical and prescription drug benefits, 4.50%    
Maximum [Member]      
Assumptions used to determine benefit obligations [Abstract]      
Discount rate 5.66% 3.35% 3.25%
Assumptions used to determine net periodic pension cost [Abstract]      
Discount rate 3.35% 3.25% 3.73%
Estimate future benefit payments [Abstract]      
Annual rates of increase in the per capita cost of covered medical and prescription drug benefits, 6.50%    
Pension Benefits [Member]      
Accumulated other comprehensive income (loss), before tax [Abstract]      
Net actuarial loss (gain) $ 35,971 $ 21,608  
Prior service cost (credit) 211 320  
Total amounts recognized in AOCI (pre-tax) 36,182 21,928  
Change in benefit obligation [Roll Forward]      
Benefit obligation at beginning of year 88,919 90,194  
Service cost 2,024 2,069 $ 1,840
Interest cost 2,765 2,717 3,237
Plan participants' contributions 0 0  
Actuarial (gain) loss (11,158) 499  
Benefits paid (6,610) (6,560)  
Projected benefit obligation at end of year 75,940 88,919 90,194
Change in plan assets [Roll Forward]      
Fair value of plan assets at beginning of year 135,867 128,563  
(Loss) gain on plan assets (17,260) 12,523  
Employer contributions 1,319 1,341  
Plan participants' contributions 0 0  
Benefits paid (6,610) (6,560)  
Fair value of plan assets at end of year 113,316 135,867 128,563
Funded (unfunded) status at year end 37,376 46,948  
Accumulated benefit obligation 75,900 88,900  
Amounts recognized in Balance Sheet [Abstract]      
Funded (unfunded) status at year end 37,376 46,948  
Components of net periodic (benefit) cost [Abstract]      
Service cost 2,024 2,069 1,840
Interest cost 2,765 2,717 3,237
Expected return on plan assets (8,884) (8,786) (8,410)
Additional gain due to curtailment 0 0 (74)
Amortization of prior service cost 108 59 41
Amortization of unrecognized net loss 623 1,263 1,535
Net periodic pension (benefit) cost (3,364) (2,678) (1,831)
Other changes in plan assets and benefit obligation recognized in OCI (pre-tax) [Abstract]      
Net loss (gain) 14,987 (3,237) (628)
Additional gain due to curtailment 0 0 7
Amortization of prior service cost (108) (59) (41)
Amortization of unrecognized net loss (623) (1,263) (1,535)
Total recognized in OCI 14,256 (4,559) (2,197)
Total recognized in net periodic cost (benefit) and OCI, pre-tax 10,892 (7,237) (4,028)
Estimate future benefit payments [Abstract]      
2023 6,824    
2024 7,218    
2025 7,467    
2026 7,003    
2027 7,595    
2028 - 2032 33,279    
Employer voluntary contribution to plan 0 0  
Pension Benefits [Member] | Other Assets [Member]      
Amounts recognized in Balance Sheet [Abstract]      
Assets recognized 53,031 65,638  
Pension Benefits [Member] | Other Liabilities [Member]      
Amounts recognized in Balance Sheet [Abstract]      
Liabilities recognized $ (15,655) $ (18,690)  
Pension Benefits [Member] | Cash and Cash Equivalents [Member]      
Actual plan asset allocations [Abstract]      
Actual plan asset allocations 3.00% 2.00%  
Pension Benefits [Member] | Cash and Cash Equivalents [Member] | Minimum [Member]      
Target asset allocations [Abstract]      
Target allocation percentage of assets 0.00%    
Pension Benefits [Member] | Cash and Cash Equivalents [Member] | Maximum [Member]      
Target asset allocations [Abstract]      
Target allocation percentage of assets 15.00%    
Pension Benefits [Member] | Fixed Income Securities [Member]      
Actual plan asset allocations [Abstract]      
Actual plan asset allocations 38.00% 37.00%  
Pension Benefits [Member] | Fixed Income Securities [Member] | Minimum [Member]      
Target asset allocations [Abstract]      
Target allocation percentage of assets 30.00%    
Pension Benefits [Member] | Fixed Income Securities [Member] | Maximum [Member]      
Target asset allocations [Abstract]      
Target allocation percentage of assets 60.00%    
Pension Benefits [Member] | Equities [Member]      
Actual plan asset allocations [Abstract]      
Actual plan asset allocations 59.00% 61.00%  
Pension Benefits [Member] | Equities [Member] | Minimum [Member]      
Target asset allocations [Abstract]      
Target allocation percentage of assets 40.00%    
Pension Benefits [Member] | Equities [Member] | Maximum [Member]      
Target asset allocations [Abstract]      
Target allocation percentage of assets 70.00%    
Other Benefits [Member]      
Accumulated other comprehensive income (loss), before tax [Abstract]      
Net actuarial loss (gain) $ (921) $ (226)  
Prior service cost (credit) (14) (8)  
Total amounts recognized in AOCI (pre-tax) (935) (234)  
Change in benefit obligation [Roll Forward]      
Benefit obligation at beginning of year 5,152 5,999  
Service cost 7 8 8
Interest cost 170 163 213
Plan participants' contributions 147 160  
Actuarial (gain) loss (695) (543)  
Benefits paid (598) (635)  
Projected benefit obligation at end of year 4,183 5,152 5,999
Change in plan assets [Roll Forward]      
Fair value of plan assets at beginning of year 0 0  
(Loss) gain on plan assets 0 0  
Employer contributions 451 475  
Plan participants' contributions 147 160  
Benefits paid (598) (635)  
Fair value of plan assets at end of year 0 0 0
Funded (unfunded) status at year end (4,183) (5,152)  
Accumulated benefit obligation 4,200 5,200  
Amounts recognized in Balance Sheet [Abstract]      
Funded (unfunded) status at year end (4,183) (5,152)  
Components of net periodic (benefit) cost [Abstract]      
Service cost 7 8 8
Interest cost 170 163 213
Expected return on plan assets 0 0 0
Additional gain due to curtailment 0 0 0
Amortization of prior service cost 6 51 51
Amortization of unrecognized net loss 0 0 0
Net periodic pension (benefit) cost 183 222 272
Other changes in plan assets and benefit obligation recognized in OCI (pre-tax) [Abstract]      
Net loss (gain) (695) (543) 192
Additional gain due to curtailment 0 0 0
Amortization of prior service cost (6) (51) (51)
Amortization of unrecognized net loss 0 0 0
Total recognized in OCI (701) (594) 141
Total recognized in net periodic cost (benefit) and OCI, pre-tax (518) (372) $ 413
Estimate future benefit payments [Abstract]      
2023 415    
2024 410    
2025 405    
2026 398    
2027 374    
2028 - 2032 1,688    
Employer voluntary contribution to plan 0 0  
Other Benefits [Member] | Other Assets [Member]      
Amounts recognized in Balance Sheet [Abstract]      
Assets recognized 0 0  
Other Benefits [Member] | Other Liabilities [Member]      
Amounts recognized in Balance Sheet [Abstract]      
Liabilities recognized $ (4,183) $ (5,152)