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Segment Reporting (Business Segment Profit (Loss)) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Segment Reporting Information [Line Items]      
Net interest income (expense) $ 154,730 $ 138,985 $ 129,912
Benefit (Provision) for credit losses - loans 8,336 (27,184) (8,044)
Noninterest income 46,906 43,176 40,381
Noninterest expense (112,750) (109,254) (102,828)
Income before income taxes 97,222 45,723 59,421
Income tax benefit (19,525) (7,391) (10,559)
Net income 77,697 38,332 48,862
Operating Segment [Member] | Banking [Member]      
Segment Reporting Information [Line Items]      
Net interest income (expense) 158,967 141,873 132,383
Benefit (Provision) for credit losses - loans 8,336 (27,184) (8,044)
Noninterest income 31,340 31,232 29,390
Noninterest expense (95,882) (94,988) (88,801)
Income before income taxes 102,761 50,933 64,928
Income tax benefit 21,038 (8,630) (11,190)
Net income 81,723 42,303 53,738
Operating Segment [Member] | All Other [Member]      
Segment Reporting Information [Line Items]      
Net interest income (expense) (4,237) (2,888) (2,471)
Noninterest income 15,566 11,944 10,991
Noninterest expense (16,868) (14,266) (14,027)
Income before income taxes (5,539) (5,210) (5,507)
Income tax benefit 1,513 1,239 631
Net income $ (4,026) $ (3,971) $ (4,876)