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LOANS AND LEASES RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES ON LOANS AND LEASES - Performance Status (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	$ 12,215,920	$ 11,889,120
Loans still accruing interest because collection is considered probable	500	500
Purchased-credit-impaired loans	152,200	157,200
Small Business Administration (SBA), CARES Act, Paycheck Protection Program
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	38,300	74,700
Total past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	70,467	93,956
30-59 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	20,281	55,532
30-59 Days past due | Small Business Administration (SBA), CARES Act, Paycheck Protection Program
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	600	700
60-89 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	8,657	14,600
90 Days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	41,529	23,824
Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	12,145,453	11,795,164
60 Days or More Past Due | Small Business Administration (SBA), CARES Act, Paycheck Protection Program
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	20,600	48,500
Commercial and industrial, including specialized lending
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	6,702,708	6,211,105
Commercial and industrial, including specialized lending | Total past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	9,023	5,991
Commercial and industrial, including specialized lending | 30-59 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	3,698	1,516
Commercial and industrial, including specialized lending | 60-89 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	14	322
Commercial and industrial, including specialized lending | 90 Days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	5,311	4,153
Commercial and industrial, including specialized lending | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	6,693,685	6,205,114
Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	2,067,332	2,138,622
Multifamily | Total past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	14,002	16,003
Multifamily | 30-59 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	0	16,003
Multifamily | 60-89 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	0	0
Multifamily | 90 Days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	14,002	0
Multifamily | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	2,053,330	2,122,619
Commercial real estate owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	805,779	797,319
Commercial real estate owner occupied | Total past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	9,697	10,090
Commercial real estate owner occupied | 30-59 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	113	449
Commercial real estate owner occupied | 60-89 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	0	3,814
Commercial real estate owner occupied | 90 Days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	9,584	5,827
Commercial real estate owner occupied | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	796,082	787,229
Commercial real estate non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	1,202,606	1,177,650
Commercial real estate non-owner occupied | Total past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	6,136	16,653
Commercial real estate non-owner occupied | 30-59 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	5,580	16,653
Commercial real estate non-owner occupied | 60-89 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	494	0
Commercial real estate non-owner occupied | 90 Days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	62	0
Commercial real estate non-owner occupied | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	1,196,470	1,160,997
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	163,409	166,393
Construction | Total past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	0	0
Construction | 30-59 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	0	0
Construction | 60-89 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	0	0
Construction | 90 Days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	0	0
Construction | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	163,409	166,393
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	481,503	484,435
Residential real estate | Total past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	9,978	16,523
Residential real estate | 30-59 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	2,865	10,504
Residential real estate | 60-89 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	2,704	2,255
Residential real estate | 90 Days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	4,409	3,764
Residential real estate | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	471,525	467,912
Manufactured housing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	35,901	38,670
Manufactured housing | Total past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	3,513	4,364
Manufactured housing | 30-59 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	516	1,152
Manufactured housing | 60-89 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	450	343
Manufactured housing | 90 Days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	2,547	2,869
Manufactured housing | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	32,388	34,306
Installment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	756,682	874,926
Installment | Total past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	18,118	24,332
Installment | 30-59 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	7,509	9,255
Installment | 60-89 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	4,995	7,866
Installment | 90 Days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	5,614	7,211
Installment | Current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total consumer loans receivable	$ 738,564	$ 850,594

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Amortized cost excluding accrued interest, of financing receivable 90 days or more past due and still accruing. Excludes net investment in lease.

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