Loans Receivable, Net - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivable, net	$ 16,005,325,000	$ 15,064,529,000
Percentage of consolidated stockholders equity exceeding which no borrower had outstanding loans or commitments	10.00%
Provision for credit losses	$ 20,790,000	17,433,000	$ 16,380,000
ACL on PCD loans acquired			371,000
Nonaccrual interest income reversed	356,000	1,175,000	660,000
Post-modification recorded balance		6,346,000	2,442,000
Financing receivable, modified, commitment to lend	5,361,000	437,000
Consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process	98,000	270,000
TDR with pre modification loan balance for which oreo was received		1,253,000	1,628,000
Charge-offs on TDRs		0	0
Related Party
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivable, net	110,707,000	101,637,000
Origination of notes receivable from related parties	20,758,000
Repayment of notes receivable from related parties	11,688,000
Asset Pledged as Collateral
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivable, net	11,571,856,000
Altabank
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for credit losses		18,056,000
Residential Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
OREO secured by residential real estate	15,000	0
Commercial Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for credit losses	6,748,000	7,231,000	28,996,000
ACL on PCD loans acquired			309,000
Post-modification recorded balance		4,862,000	1,473,000
Commercial Real Estate | Payment Deferral
Financing Receivable, Allowance for Credit Losses [Line Items]
Post-modification recorded balance	2,159,000
Other Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for credit losses	1,996,000	(704,000)	(23,444,000)
ACL on PCD loans acquired			62,000
Post-modification recorded balance		$ 1,453,000	$ 554,000
Other Commercial | Payment Deferral
Financing Receivable, Allowance for Credit Losses [Line Items]
Post-modification recorded balance	$ 37,000