Loans and Allowance for Credit Losses - Changes in Allowance for Loan Losses by Loan Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Allowance for loan losses:
Beginning balance	$ 195,397	$ 130,648
Provision for credit losses	0	0
CECL Day 1 non-PCD provision for credit losses	13,955
CECL Day 1 PCD ACL	16,599
Recoveries on loans	3,927	2,578
Loans charged off	(6,601)	(11,884)
Ending balance	223,277	195,397	$ 130,648
Beginning balance		130,648	80,284
Provision for credit losses - loans	16,755	0	58,673
Recoveries on loans			2,176
Loans charged off			(10,485)
Ending balance			130,648
Impact of adopting ASC 326
Allowance for loan losses:
Beginning balance		74,055
Ending balance			74,055
Balances, January 1, 2021 Post-ASC 326 adoption
Allowance for loan losses:
Beginning balance		204,703
Ending balance			204,703
Previously Reported
Allowance for loan losses:
Beginning balance	195,397	130,648
Ending balance		195,397	130,648
Credit risk reclassifications
Allowance for loan losses:
Beginning balance		0
Ending balance			0
Commercial
Allowance for loan losses:
Beginning balance		47,115
Provision for credit losses	16,697	7,921
CECL Day 1 non-PCD provision for credit losses	2,957
CECL Day 1 PCD ACL	12,970
Recoveries on loans	872	724
Loans charged off	(1,215)	(5,849)
Ending balance	102,216		47,115
Beginning balance		47,115	32,902
Provision for credit losses - loans			21,930
Recoveries on loans			819
Loans charged off			(8,536)
Ending balance			47,115
Commercial | Impact of adopting ASC 326
Allowance for loan losses:
Beginning balance		20,024
Ending balance			20,024
Commercial | Balances, January 1, 2021 Post-ASC 326 adoption
Allowance for loan losses:
Beginning balance		67,139
Ending balance			67,139
Commercial | Previously Reported
Allowance for loan losses:
Beginning balance	69,935	47,115
Ending balance		69,935	47,115
Commercial | Credit risk reclassifications
Allowance for loan losses:
Beginning balance
Ending balance
Commercial Real Estate
Allowance for loan losses:
Beginning balance		40,786
Provision for credit losses	(20,425)	(11,093)
CECL Day 1 non-PCD provision for credit losses	5,539
CECL Day 1 PCD ACL	2,981
Recoveries on loans	1,096	580
Loans charged off	(3,017)	(4,533)
Ending balance	46,839		40,786
Beginning balance		51,070	28,778
Provision for credit losses - loans			22,174
Recoveries on loans			431
Loans charged off			(313)
Ending balance			51,070
Commercial Real Estate | Impact of adopting ASC 326
Allowance for loan losses:
Beginning balance		34,925
Ending balance			34,925
Commercial Real Estate | Balances, January 1, 2021 Post-ASC 326 adoption
Allowance for loan losses:
Beginning balance		75,711
Ending balance			75,711
Commercial Real Estate | Previously Reported
Allowance for loan losses:
Beginning balance	60,665	51,070
Ending balance		60,665	51,070
Commercial Real Estate | Credit risk reclassifications
Allowance for loan losses:
Beginning balance		(10,284)
Ending balance			(10,284)
Construction
Allowance for loan losses:
Beginning balance		10,284
Provision for credit losses	6,367	1,122
CECL Day 1 non-PCD provision for credit losses	871
CECL Day 1 PCD ACL	648
Recoveries on loans	863	1
Loans charged off	0	(6)
Ending balance	28,955		10,284
Construction | Impact of adopting ASC 326
Allowance for loan losses:
Beginning balance		8,805
Ending balance			8,805
Construction | Balances, January 1, 2021 Post-ASC 326 adoption
Allowance for loan losses:
Beginning balance		19,089
Ending balance			19,089
Construction | Previously Reported
Allowance for loan losses:
Beginning balance	20,206	0
Ending balance		20,206	0
Construction | Credit risk reclassifications
Allowance for loan losses:
Beginning balance		10,284
Ending balance			10,284
Consumer
Allowance for loan losses:
Beginning balance		0
Provision for credit losses		0
Recoveries on loans		0
Loans charged off		0
Ending balance			0
Beginning balance		9,648	4,035
Provision for credit losses - loans			5,996
Recoveries on loans			260
Loans charged off			(643)
Ending balance			9,648
Consumer | Impact of adopting ASC 326
Allowance for loan losses:
Beginning balance		0
Ending balance			0
Consumer | Balances, January 1, 2021 Post-ASC 326 adoption
Allowance for loan losses:
Beginning balance		0
Ending balance			0
Consumer | Previously Reported
Allowance for loan losses:
Beginning balance	0	9,648
Ending balance		0	9,648
Consumer | Credit risk reclassifications
Allowance for loan losses:
Beginning balance		(9,648)
Ending balance			(9,648)
Residential
Allowance for loan losses:
Beginning balance		0
Provision for credit losses		0
Recoveries on loans		0
Loans charged off		0
Ending balance			0
Beginning balance		22,815	14,569
Provision for credit losses - loans			8,573
Recoveries on loans			666
Loans charged off			(993)
Ending balance			22,815
Residential | Impact of adopting ASC 326
Allowance for loan losses:
Beginning balance		0
Ending balance			0
Residential | Balances, January 1, 2021 Post-ASC 326 adoption
Allowance for loan losses:
Beginning balance		0
Ending balance			0
Residential | Previously Reported
Allowance for loan losses:
Beginning balance	0	22,815
Ending balance		0	22,815
Residential | Credit risk reclassifications
Allowance for loan losses:
Beginning balance		(22,815)
Ending balance			(22,815)
Consumer & Residential
Allowance for loan losses:
Beginning balance		32,463
Provision for credit losses	(2,639)	2,050
CECL Day 1 non-PCD provision for credit losses	4,588
CECL Day 1 PCD ACL	0
Recoveries on loans	1,096	1,273
Loans charged off	(2,369)	(1,496)
Ending balance	45,267		32,463
Consumer & Residential | Impact of adopting ASC 326
Allowance for loan losses:
Beginning balance		10,301
Ending balance			10,301
Consumer & Residential | Balances, January 1, 2021 Post-ASC 326 adoption
Allowance for loan losses:
Beginning balance		42,764
Ending balance			42,764
Consumer & Residential | Previously Reported
Allowance for loan losses:
Beginning balance	$ 44,591	0
Ending balance		44,591	0
Consumer & Residential | Credit risk reclassifications
Allowance for loan losses:
Beginning balance		$ 32,463
Ending balance			$ 32,463