Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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Amount of unamortized loan commitment, origination, and other costs (fees) and purchase premium (discount) on financing receivable recognized as adjustment to yield. Excludes financing receivable covered under loss sharing agreement.

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Amount, before valuation allowance, of financing receivable classified as held-for-sale.

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Loans Receivable - Summary of Originated and Acquired Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for loan losses
Total loans receivable, gross	$ 10,920,452	$ 10,016,392
Allowance for credit losses	(118,036)	(102,241)	$ (134,427)	$ (57,941)
Total loans receivable, net	10,802,416	9,914,151
Loans held-for-sale	9,913	25,056
Unearned income, unamortized premiums and discounts and deferred fees and costs	76,100	62,800
Personal Banking:
Allowance for loan losses
Total loans receivable, gross	6,964,928	6,153,299
Allowance for credit losses	(48,887)	(31,040)	(30,954)	(18,356)
Personal Banking: \| Residential mortgage loans
Allowance for loan losses
Total loans receivable, gross	3,498,599	2,994,620
Allowance for credit losses	(19,261)	(7,373)	(7,266)	(2,574)
Loans held-for-sale	9,900	25,100
Personal Banking: \| Home equity loans
Allowance for loan losses
Total loans receivable, gross	1,297,674	1,319,931
Allowance for credit losses	(5,902)	(5,300)	(5,992)	(3,189)
Personal Banking: \| Vehicle loans
Allowance for loan losses
Total loans receivable, gross	2,056,783	1,484,231
Allowance for credit losses	(23,059)	(15,483)	(14,825)	(7,292)
Personal Banking: \| Consumer loans
Allowance for loan losses
Total loans receivable, gross	111,872	354,517
Allowance for credit losses	(665)	(2,884)	(2,871)	(5,301)
Commercial Banking:
Allowance for loan losses
Total loans receivable, gross	3,955,524	3,863,093
Allowance for credit losses	(69,149)	(71,201)	(103,473)	(39,585)
Commercial Banking: \| Commercial real estate loans
Allowance for loan losses
Total loans receivable, gross	2,448,028	2,625,481
Allowance for credit losses	(44,506)	(54,141)	(79,381)	(15,843)
Commercial Banking: \| Commercial real estate loans - owner occupied
Allowance for loan losses
Total loans receivable, gross	375,527	390,003
Allowance for credit losses	(4,004)	(3,883)	(10,518)	(5,745)
Commercial Banking: \| Commercial loans
Allowance for loan losses
Total loans receivable, gross	1,131,969	847,609
Allowance for credit losses	(20,639)	(13,177)	$ (13,574)	$ (17,997)
Originated
Allowance for loan losses
Total loans receivable, gross	10,089,414	8,872,025
Allowance for credit losses	(107,379)	(86,750)
Total loans receivable, net	9,982,035	8,785,275
Originated \| Personal Banking:
Allowance for loan losses
Total loans receivable, gross	6,529,189	5,582,868
Originated \| Personal Banking: \| Residential mortgage loans
Allowance for loan losses
Total loans receivable, gross	3,327,879	2,783,459
Originated \| Personal Banking: \| Home equity loans
Allowance for loan losses
Total loans receivable, gross	1,131,641	1,107,202
Originated \| Personal Banking: \| Vehicle loans
Allowance for loan losses
Total loans receivable, gross	1,965,385	1,384,246
Originated \| Personal Banking: \| Consumer loans
Allowance for loan losses
Total loans receivable, gross	104,284	307,961
Originated \| Commercial Banking:
Allowance for loan losses
Total loans receivable, gross	3,560,225	3,289,157
Originated \| Commercial Banking: \| Commercial real estate loans
Allowance for loan losses
Total loans receivable, gross	2,135,607	2,202,027
Originated \| Commercial Banking: \| Commercial real estate loans - owner occupied
Allowance for loan losses
Total loans receivable, gross	341,704	321,253
Originated \| Commercial Banking: \| Commercial loans
Allowance for loan losses
Total loans receivable, gross	1,082,914	765,877
Acquired
Allowance for loan losses
Total loans receivable, gross	831,038	1,144,367
Allowance for credit losses	(10,657)	(15,491)
Total loans receivable, net	820,381	1,128,876
Acquired \| Personal Banking:
Allowance for loan losses
Total loans receivable, gross	435,739	570,431
Acquired \| Personal Banking: \| Residential mortgage loans
Allowance for loan losses
Total loans receivable, gross	170,720	211,161
Acquired \| Personal Banking: \| Home equity loans
Allowance for loan losses
Total loans receivable, gross	166,033	212,729
Acquired \| Personal Banking: \| Vehicle loans
Allowance for loan losses
Total loans receivable, gross	91,398	99,985
Acquired \| Personal Banking: \| Consumer loans
Allowance for loan losses
Total loans receivable, gross	7,588	46,556
Acquired \| Commercial Banking:
Allowance for loan losses
Total loans receivable, gross	395,299	573,936
Acquired \| Commercial Banking: \| Commercial real estate loans
Allowance for loan losses
Total loans receivable, gross	312,421	423,454
Acquired \| Commercial Banking: \| Commercial real estate loans - owner occupied
Allowance for loan losses
Total loans receivable, gross	33,823	68,750
Acquired \| Commercial Banking: \| Commercial loans
Allowance for loan losses
Total loans receivable, gross	$ 49,055	$ 81,732