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Accumulated Other Comprehensive Income (Loss) (Changes in AOCI by component) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance $ (24,840) $ 5,724 $ 1,859 $ 7,698
OCI before reclassifications 22,815 1,690 56,413 4,194
Tax effect 4,788 353 11,687 883
Unrealized gains (losses), net of tax (18,027) (1,337) (44,726) (3,311)
Ending Balance (42,867) 4,387 (42,867) 4,387
Unrealized Holding Gains (Losses) on AFS Securities [Member]        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance (22,826) 8,469 3,873 10,485
OCI before reclassifications 22,815 1,690 56,413 4,247
Tax effect 4,788 353 11,687 894
Unrealized gains (losses), net of tax (18,027) (1,337) (44,726) (3,353)
Ending Balance (40,853) 7,132 (40,853) 7,132
Defined Benefit Pension Plan [Member]        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance (2,014) (2,745) (2,014) (2,745)
OCI before reclassifications 0 0 0 0
Tax effect 0 0 0 0
Unrealized gains (losses), net of tax 0 0 0 0
Ending Balance (2,014) (2,745) (2,014) (2,745)
Gain (Loss) on Derivative Instruments [Member]        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning Balance 0 0 0 (42)
OCI before reclassifications 0 0 0 (53)
Tax effect 0 0 0 (11)
Unrealized gains (losses), net of tax 0 0 0 42
Ending Balance 0 0 0 0
Auction Rate Money Market Preferred Stocks [Member] | Unrealized Holding Gains (Losses) on AFS Securities [Member]        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Unrealized gains (losses), net of tax $ (18) $ (14) $ (763) $ 9