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Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases - Schedule of Allowance for Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 137,804	$ 144,176	$ 56,379
Cumulative effect of change in accounting principle	130,924	137,804	144,176	$ 144,200
Charge-offs	(77,196)	(40,381)	(61,736)
Recoveries	10,828	6,583	6,930
Provision (benefit) for credit losses on loans and leases	59,488	27,426	62,774
Ending balance	130,924	137,804	144,176
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			79,829
Cumulative effect of change in accounting principle				$ 79,800
Commercial and industrial, including specialty lending
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	12,702	12,239	15,556
Cumulative effect of change in accounting principle	17,582	12,702	12,239
Charge-offs	(16,248)	(1,550)	(3,158)
Recoveries	1,182	1,102	3,019
Provision (benefit) for credit losses on loans and leases	19,946	911	(3,937)
Ending balance	17,582	12,702	12,239
Commercial and industrial, including specialty lending | Loans Originated Under Small Business Administration (SBA) CARES Act Paycheck Protection Program, Subsequently Determined Ineligible For Forgiveness
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charge-offs	(11,000)
Commercial and industrial, including specialty lending | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			759
Cumulative effect of change in accounting principle
Multifamily
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	4,477	12,620	6,157
Cumulative effect of change in accounting principle	14,541	4,477	12,620
Charge-offs	(1,990)	(1,132)	0
Recoveries	337	0	0
Provision (benefit) for credit losses on loans and leases	11,717	(7,011)	4,292
Ending balance	14,541	4,477	12,620
Multifamily | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			2,171
Cumulative effect of change in accounting principle
Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	3,213	9,512	2,235
Cumulative effect of change in accounting principle	6,454	3,213	9,512
Charge-offs	0	(749)	(78)
Recoveries	51	500	28
Provision (benefit) for credit losses on loans and leases	3,190	(6,050)	1,554
Ending balance	6,454	3,213	9,512
Commercial real estate owner occupied | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			5,773
Cumulative effect of change in accounting principle
Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	6,210	19,452	6,243
Cumulative effect of change in accounting principle	11,219	6,210	19,452
Charge-offs	(6,075)	(944)	(25,779)
Recoveries	121	84	1,293
Provision (benefit) for credit losses on loans and leases	10,963	(12,382)	29,777
Ending balance	11,219	6,210	19,452
Commercial real estate non-owner occupied | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			7,918
Cumulative effect of change in accounting principle
Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	692	5,871	1,262
Cumulative effect of change in accounting principle	1,913	692	5,871
Charge-offs	0	0	0
Recoveries	236	125	128
Provision (benefit) for credit losses on loans and leases	985	(5,304)	4,579
Ending balance	1,913	692	5,871
Construction | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			(98)
Cumulative effect of change in accounting principle
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	2,383	3,977	3,218
Cumulative effect of change in accounting principle	6,094	2,383	3,977
Charge-offs	(17)	(130)	(60)
Recoveries	64	54	86
Provision (benefit) for credit losses on loans and leases	3,664	(1,518)	(785)
Ending balance	6,094	2,383	3,977
Residential real estate | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			1,518
Cumulative effect of change in accounting principle
Manufactured housing
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	4,278	5,190	1,060
Cumulative effect of change in accounting principle	4,430	4,278	5,190
Charge-offs	0	0	0
Recoveries	0	0	0
Provision (benefit) for credit losses on loans and leases	152	(912)	328
Ending balance	4,430	4,278	5,190
Manufactured housing | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			3,802
Cumulative effect of change in accounting principle
Installment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	103,849	75,315	20,648
Cumulative effect of change in accounting principle	68,691	103,849	75,315
Charge-offs	(52,866)	(35,876)	(32,661)
Recoveries	8,837	4,718	2,376
Provision (benefit) for credit losses on loans and leases	8,871	59,692	26,966
Ending balance	$ 68,691	$ 103,849	75,315
Installment | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			$ 57,986
Cumulative effect of change in accounting principle

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Topic 326
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-Section 50
-Paragraph 13
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+ References

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