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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) (Parentheticals) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Statement of Comprehensive Income [Abstract]        
Unrealized Gain (Loss) on Available-for-Sale Securities, tax benefit $ 46 $ 7 $ 127 $ 27
Pension and Other Postretirement Benefit Plan, tax benefit (expense) $ (37) $ (51) $ (8) $ (154)