Business Segments (Statement of Operations and Total Assets by Reportable Segment) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Segment Reporting Information [Line Items]
Net interest income (expense)	[1]	$ 31,665	$ 37,193
Provision for credit losses		700	800
Net interest income (expense) after provision for credit losses		30,965	36,393
Noninterest income	[1]	17,163	13,283
Depreciation and amortization expense		1,209	1,187
Other noninterest expenses		33,154	32,377
Total noninterest expenses		34,363	33,564
Income (loss) before income taxes		13,765	16,112
Income tax expense		2,829	3,300
Net income		10,936	12,812
Total assets		7,249,124	6,859,182	$ 7,202,847
Expenditures for long-lived assets		626	1,144
Commercial Banking [Member]
Segment Reporting Information [Line Items]
Net interest income (expense)		31,665	37,180
Provision for credit losses		700	800
Net interest income (expense) after provision for credit losses		30,965	36,380
Noninterest income		5,572	4,431
Depreciation and amortization expense		892	831
Other noninterest expenses		26,141	24,635
Total noninterest expenses		27,033	25,466
Income (loss) before income taxes		9,504	15,345
Income tax expense		1,906	3,087
Net income		7,598	12,258
Total assets		7,190,644	6,785,254
Expenditures for long-lived assets		556	1,136
Wealth Management Services [Member]
Segment Reporting Information [Line Items]
Net interest income (expense)		0	13
Provision for credit losses		0	0
Net interest income (expense) after provision for credit losses		0	13
Noninterest income		11,591	8,852
Depreciation and amortization expense		317	356
Other noninterest expenses		7,013	7,742
Total noninterest expenses		7,330	8,098
Income (loss) before income taxes		4,261	767
Income tax expense		923	213
Net income		3,338	554
Total assets		58,480	73,928
Expenditures for long-lived assets		$ 70	$ 8

[1] As reported in the Unaudited Consolidated Statements of Income.