Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Segment Reporting Information [Line Items]
Goodwill and other intangibles	$ 192,051				$ 192,051		$ 101,666
Total assets	5,073,454				5,073,454		4,082,200
Net interest income	34,578		$ 31,711		71,188	$ 62,953
Provision for credit losses and unfunded loans	25		616		8,624	258
Service fees, security gains and other noninterest income	9,449		9,477		19,874	27,175
Noninterest expense	24,185		20,282		53,008	49,576
Amortization and depreciation expense	2,201		1,179		4,100	2,341
INCOME BEFORE INCOME TAXES	17,616		19,111		25,330	37,953
Income taxes	2,650		3,160		3,289	6,158
NET INCOME	14,966	$ 7,075	15,951	$ 15,844	22,041	31,795
Eliminations And Others
Segment Reporting Information [Line Items]
Goodwill and other intangibles	(4,263)				(4,263)		(4,263)
Total assets	5,297				5,297		3,705
Net interest income	(955)		(813)		(1,910)	(1,598)
Provision for credit losses and unfunded loans	0		0		0	0
Service fees, security gains and other noninterest income	(386)		32		(617)	(209)
Noninterest expense	475		494		1,120	577
Amortization and depreciation expense	112		113		226	227
INCOME BEFORE INCOME TAXES	(1,928)		(1,388)		(3,873)	(2,611)
Income taxes	(430)		(364)		(909)	(662)
NET INCOME	(1,498)		(1,024)		(2,964)	(1,949)
Trust Segment | Operating Segments
Segment Reporting Information [Line Items]
Goodwill and other intangibles	5,709				5,709		5,739
Total assets	17,610				17,610		14,383
Net interest income	57		38		114	72
Provision for credit losses and unfunded loans	0		0		0	0
Service fees, security gains and other noninterest income	2,668		4,839		5,568	14,037
Noninterest expense	1,654		3,614		3,297	5,383
Amortization and depreciation expense	23		28		46	56
INCOME BEFORE INCOME TAXES	1,048		1,235		2,339	8,670
Income taxes	221		258		492	1,820
NET INCOME	827		977		1,847	6,850
Bank Segment | Operating Segments
Segment Reporting Information [Line Items]
Goodwill and other intangibles	190,605				190,605		100,190
Total assets	5,050,547				5,050,547		$ 4,064,112
Net interest income	35,476		32,486		72,984	64,479
Provision for credit losses and unfunded loans	25		616		8,624	258
Service fees, security gains and other noninterest income	7,167		4,606		14,923	13,347
Noninterest expense	22,056		16,174		48,591	43,616
Amortization and depreciation expense	2,066		1,038		3,828	2,058
INCOME BEFORE INCOME TAXES	18,496		19,264		26,864	31,894
Income taxes	2,859		3,266		3,706	5,000
NET INCOME	$ 15,637		$ 15,998		$ 23,158	$ 26,894