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OTHER COMPREHENSIVE (LOSS) INCOME (reclassification adjustments) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]      
Prior service credit $ 1,421 $ 1,421 $ 1,421
Net actuarial loss (900) (1,629) (2,301)
Total amortization 521 (208) (880)
Tax (expense) benefit (315) (123) 46
Amortization of postretirement benefit plan items, net of tax 206 (331) (834)
Realized (loss) gain on debt securities (8) 0 206
Tax benefit (expense) 2 0 (53)
Realized (loss) gain on debt securities, net of tax (6) 0 153
Realized gain (loss) on cash flow hedges 20 (1,384) (968)
Tax (expense) benefit (5) 361 249
Realized gain (loss) on cash flow hedges, net of tax 15 (1,023) (719)
Foreign currency translation adjustment (5,550) 0 0
Total reclassifications, net of tax $ (5,335) $ (1,354) $ (1,400)