Business Segments (Statement of Operations and Total Assets by Reportable Segment) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Segment Reporting Information [Line Items]
Net interest income (expense)	[1]	$ 33,500	$ 37,515	$ 70,693	$ 72,606
Provision for credit losses		700	(3,000)	1,500	(2,900)
Net interest income (expense) after provision for credit losses		32,800	40,515	69,193	75,506
Noninterest income	[1]	14,325	15,852	27,608	33,011
Depreciation and amortization expense		1,216	1,048	2,403	2,103
Other noninterest expenses		31,800	30,029	64,177	60,193
Total noninterest expenses		33,016	31,077	66,580	62,296
Income (loss) before income taxes		14,109	25,290	30,221	46,221
Income tax expense		2,853	5,333	6,153	9,781
Net income		11,256	19,957	24,068	36,440
Total assets		7,011,760	5,982,891	7,011,760	5,982,891	$ 6,660,051
Expenditures for long-lived assets		1,876	1,647	3,020	2,481
Commercial Banking [Member]
Segment Reporting Information [Line Items]
Net interest income (expense)		33,486	37,563	70,666	72,671
Provision for credit losses		700	(3,000)	1,500	(2,900)
Net interest income (expense) after provision for credit losses		32,786	40,563	69,166	75,571
Noninterest income		5,142	5,619	9,573	12,131
Depreciation and amortization expense		858	707	1,690	1,418
Other noninterest expenses		24,449	22,504	49,082	45,114
Total noninterest expenses		25,307	23,211	50,772	46,532
Income (loss) before income taxes		12,621	22,971	27,967	41,170
Income tax expense		2,518	4,748	5,605	8,545
Net income		10,103	18,223	22,362	32,625
Total assets		6,938,357	5,908,644	6,938,357	5,908,644
Expenditures for long-lived assets		1,859	1,558	2,995	2,288
Wealth Management Services [Member]
Segment Reporting Information [Line Items]
Net interest income (expense)		14	(48)	27	(65)
Provision for credit losses		0	0	0	0
Net interest income (expense) after provision for credit losses		14	(48)	27	(65)
Noninterest income		9,183	10,233	18,035	20,880
Depreciation and amortization expense		358	341	713	685
Other noninterest expenses		7,351	7,525	15,095	15,079
Total noninterest expenses		7,709	7,866	15,808	15,764
Income (loss) before income taxes		1,488	2,319	2,254	5,051
Income tax expense		335	585	548	1,236
Net income		1,153	1,734	1,706	3,815
Total assets		73,403	74,247	73,403	74,247
Expenditures for long-lived assets		$ 17	$ 89	$ 25	$ 193

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