Segment Information - Schedule of Segment Reporting Information (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 (loss)	$ 73,835	$ 58,585	$ 147,952	$ 99,870
Provision for (benefit from) credit losses	4,422	5,000	7,782	8,700
Noninterest income:
Service charges on deposit accounts	5,358	4,379	10,373	8,304
Credit and debit card fees	3,057	2,990	6,038	5,405
Trust and investment advisory fees	1,478	1,909	2,939	3,856
Income from mortgage banking services, net	11,659	11,671	19,088	26,232
Other noninterest income	2,738	1,353	4,783	2,198
Total noninterest income	24,290	22,302	43,221	45,995
Noninterest expense:
Salary and employee benefits	34,056	35,248	69,105	69,473
Occupancy and equipment	7,948	7,753	16,122	14,586
Other noninterest expenses	16,039	32,667	29,082	44,076
Total noninterest expense	58,043	75,668	114,309	128,135
Income (loss) before income taxes	35,660	219	69,082	9,030
Other Information
Depreciation expense	1,713	1,971	3,423	3,385
Identifiable assets	7,797,344	7,060,692	7,797,344	7,060,692	$ 7,430,322
Operating Segments | Banking
Segment Reporting Information [Line Items]
Net interest income (loss)	73,626	58,164	147,112	99,447
Provision for (benefit from) credit losses	3,649	3,823	6,063	6,630
Noninterest income:
Service charges on deposit accounts	5,358	4,379	10,373	8,304
Credit and debit card fees	3,056	2,990	6,037	5,405
Trust and investment advisory fees	1,478	1,909	2,939	3,856
Income from mortgage banking services, net	(412)	(291)	(600)	(1,271)
Other noninterest income	2,738	1,354	4,783	2,207
Total noninterest income	12,218	10,341	23,532	18,501
Noninterest expense:
Salary and employee benefits	26,182	23,951	53,966	46,670
Occupancy and equipment	7,232	6,891	14,656	12,747
Other noninterest expenses	11,887	27,171	20,303	35,057
Total noninterest expense	45,301	58,013	88,925	94,474
Income (loss) before income taxes	36,894	6,669	75,656	16,844
Other Information
Depreciation expense	1,654	1,861	3,303	3,172
Identifiable assets	6,886,328	6,361,838	6,886,328	6,361,838
Operating Segments | Mortgage Operations
Segment Reporting Information [Line Items]
Net interest income (loss)	1,479	2,060	3,361	3,701
Provision for (benefit from) credit losses	773	1,177	1,719	2,070
Noninterest income:
Service charges on deposit accounts	0	0	0	0
Credit and debit card fees	1	0	1	0
Trust and investment advisory fees	0	0	0	0
Income from mortgage banking services, net	12,071	11,962	19,688	27,503
Other noninterest income	0	(1)	0	(9)
Total noninterest income	12,072	11,961	19,689	27,494
Noninterest expense:
Salary and employee benefits	7,252	10,518	14,024	21,932
Occupancy and equipment	671	861	1,381	1,838
Other noninterest expenses	3,826	3,953	7,335	7,125
Total noninterest expense	11,749	15,332	22,740	30,895
Income (loss) before income taxes	1,029	(2,488)	(1,409)	(1,770)
Other Information
Depreciation expense	59	110	120	213
Identifiable assets	843,483	661,307	843,483	661,307
Corporate
Segment Reporting Information [Line Items]
Net interest income (loss)	(1,270)	(1,639)	(2,521)	(3,278)
Provision for (benefit from) credit losses	0	0	0	0
Noninterest income:
Service charges on deposit accounts	0	0	0	0
Credit and debit card fees	0	0	0	0
Trust and investment advisory fees	0	0	0	0
Income from mortgage banking services, net	0	0	0	0
Other noninterest income	0	0	0	0
Total noninterest income	0	0	0	0
Noninterest expense:
Salary and employee benefits	622	779	1,115	871
Occupancy and equipment	45	1	85	1
Other noninterest expenses	326	1,543	1,444	1,894
Total noninterest expense	993	2,323	2,644	2,766
Income (loss) before income taxes	(2,263)	(3,962)	(5,165)	(6,044)
Other Information
Depreciation expense	0	0	0	0
Identifiable assets	$ 67,533	$ 37,547	$ 67,533	$ 37,547