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Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases - Credit Ratings (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	$ 1,278,309	$ 1,515,239
Fiscal year before current year	1,324,745	1,599,431
Two years before current year	1,284,667	786,506
Three years before current year	640,788	1,055,134
Four years before current year	858,690	578,390
Prior	1,462,384	1,130,969
Revolving loans amortized cost basis	922,559	909,699
Revolving loans converted to term	0	0
Loans and leases receivable	7,772,142	7,575,368
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable	5,897,634	5,960,549
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable	1,874,508	1,614,819
Commercial loans and leases receivable | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	759,472	1,188,773
Fiscal year before current year	869,048	791,958
Two years before current year	759,360	663,454
Three years before current year	553,720	1,038,646
Four years before current year	848,301	538,340
Prior	1,303,565	994,535
Revolving loans amortized cost basis	804,168	744,843
Revolving loans converted to term	0	0
Loans and leases receivable	5,897,634	5,960,549
Multi-family
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable	1,497,485	1,761,301
Multi-family | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	89,905	150,835
Fiscal year before current year	135,133	23,716
Two years before current year	23,427	299,319
Three years before current year	243,767	590,608
Four years before current year	432,428	245,946
Prior	572,825	450,877
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	1,497,485	1,761,301
Multi-family | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	89,905	150,835
Fiscal year before current year	135,133	23,716
Two years before current year	23,427	299,319
Three years before current year	243,767	535,510
Four years before current year	378,768	227,296
Prior	534,970	420,809
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	1,405,970	1,657,485
Multi-family | Special mention | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	0
Fiscal year before current year	0	0
Two years before current year	0	0
Three years before current year	0	20,901
Four years before current year	12,100	10,394
Prior	8,979	26,708
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	21,079	58,003
Multi-family | Substandard | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	0
Fiscal year before current year	0	0
Two years before current year	0	0
Three years before current year	0	34,197
Four years before current year	41,560	8,256
Prior	28,876	3,360
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	70,436	45,813
Multi-family | Doubtful | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	0
Fiscal year before current year	0	0
Two years before current year	0	0
Three years before current year	0	0
Four years before current year		0
Prior		0
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	0	0
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable	2,360,656	2,289,441
Commercial and industrial | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	452,791	752,438
Fiscal year before current year	432,240	381,057
Two years before current year	333,984	161,444
Three years before current year	120,521	122,807
Four years before current year	108,715	54,201
Prior	109,858	74,245
Revolving loans amortized cost basis	802,547	743,249
Revolving loans converted to term	0	0
Loans and leases receivable	2,360,656	2,289,441
Commercial and industrial | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	433,908	729,270
Fiscal year before current year	417,713	373,050
Two years before current year	320,158	141,943
Three years before current year	102,737	116,793
Four years before current year	101,552	45,367
Prior	102,040	71,502
Revolving loans amortized cost basis	780,892	717,007
Revolving loans converted to term	0	0
Loans and leases receivable	2,259,000	2,194,932
Commercial and industrial | Special mention | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	18,883	13,200
Fiscal year before current year	4,335	1,117
Two years before current year	6,364	436
Three years before current year	214	113
Four years before current year		516
Prior	234	21
Revolving loans amortized cost basis	14,333	17,524
Revolving loans converted to term	0	0
Loans and leases receivable	44,363	32,927
Commercial and industrial | Substandard | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	9,968
Fiscal year before current year	10,192	6,890
Two years before current year	7,462	19,065
Three years before current year	17,570	5,901
Four years before current year	7,163	8,318
Prior	7,584	2,722
Revolving loans amortized cost basis	7,322	8,718
Revolving loans converted to term	0	0
Loans and leases receivable	57,293	61,582
Commercial and industrial | Doubtful | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	0
Fiscal year before current year	0	0
Two years before current year	0	0
Three years before current year	0	0
Four years before current year	0	0
Prior		0
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	0	0
Commercial real estate owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable	653,649	572,338
Commercial real estate owner occupied | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	121,180	82,343
Fiscal year before current year	83,122	176,289
Two years before current year	172,012	82,114
Three years before current year	70,848	80,040
Four years before current year	71,626	48,741
Prior	134,189	102,070
Revolving loans amortized cost basis	672	741
Revolving loans converted to term	0	0
Loans and leases receivable	653,649	572,338
Commercial real estate owner occupied | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	121,180	82,343
Fiscal year before current year	83,122	168,977
Two years before current year	164,925	72,615
Three years before current year	60,990	70,642
Four years before current year	60,542	46,510
Prior	122,010	91,798
Revolving loans amortized cost basis	672	741
Revolving loans converted to term	0	0
Loans and leases receivable	613,441	533,626
Commercial real estate owner occupied | Special mention | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	0
Fiscal year before current year	0	4,464
Two years before current year	0	0
Three years before current year	320	9,056
Four years before current year	2,072	0
Prior	588	555
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	2,980	14,075
Commercial real estate owner occupied | Substandard | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	0
Fiscal year before current year	0	2,848
Two years before current year	7,087	9,499
Three years before current year	9,538	342
Four years before current year	9,012	2,231
Prior	11,591	9,717
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	37,228	24,637
Commercial real estate owner occupied | Doubtful | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	0
Fiscal year before current year	0	0
Two years before current year	0	0
Three years before current year	0	0
Four years before current year	0	0
Prior	0	0
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	0	0
Commercial real estate non-owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable	1,206,646	1,196,564
Commercial real estate non-owner occupied | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	92,285	183,225
Fiscal year before current year	180,908	105,430
Two years before current year	107,104	115,623
Three years before current year	113,689	245,191
Four years before current year	235,532	179,752
Prior	477,128	367,343
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	1,206,646	1,196,564
Commercial real estate non-owner occupied | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	92,285	143,231
Fiscal year before current year	158,983	105,430
Two years before current year	95,875	97,882
Three years before current year	68,193	157,835
Four years before current year	115,452	155,168
Prior	395,022	313,559
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	925,810	973,105
Commercial real estate non-owner occupied | Special mention | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	39,994
Fiscal year before current year	21,925	0
Two years before current year	11,229	0
Three years before current year	22,002	66,745
Four years before current year	99,469	24,218
Prior	43,573	14,613
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	198,198	145,570
Commercial real estate non-owner occupied | Substandard | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	0
Fiscal year before current year	0	0
Two years before current year	0	17,741
Three years before current year	23,494	20,611
Four years before current year	20,611	366
Prior	38,533	39,171
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	82,638	77,889
Commercial real estate non-owner occupied | Doubtful | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	0
Fiscal year before current year	0	0
Two years before current year	0
Three years before current year		0
Four years before current year	0	0
Prior	0	0
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	0	0
Construction
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable	179,198	140,905
Construction | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	3,311	19,932
Fiscal year before current year	37,645	105,466
Two years before current year	122,833	4,954
Three years before current year	4,895	0
Four years before current year	0	9,700
Prior	9,565	0
Revolving loans amortized cost basis	949	853
Revolving loans converted to term	0	0
Loans and leases receivable	179,198	140,905
Construction | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	3,311	19,932
Fiscal year before current year	36,135	105,466
Two years before current year	122,833	4,954
Three years before current year	4,895	0
Four years before current year	0	9,700
Prior	9,565	0
Revolving loans amortized cost basis	949	853
Revolving loans converted to term	0	0
Loans and leases receivable	177,688	140,905
Construction | Special mention | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	0
Fiscal year before current year	1,510	0
Two years before current year	0	0
Three years before current year	0	0
Four years before current year	0	0
Prior	0	0
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	1,510	0
Construction | Substandard | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	0
Fiscal year before current year	0	0
Two years before current year	0	0
Three years before current year	0	0
Four years before current year	0	0
Prior	0	0
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	0	0
Construction | Doubtful | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	0
Fiscal year before current year	0	0
Two years before current year	0	0
Three years before current year	0	0
Four years before current year	0	0
Prior	0	0
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	0	0
Consumer loans | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	518,837	326,466
Fiscal year before current year	455,697	807,473
Two years before current year	525,307	123,052
Three years before current year	87,068	16,488
Four years before current year	10,389	40,050
Prior	158,819	136,434
Revolving loans amortized cost basis	118,391	164,856
Revolving loans converted to term	0	0
Loans and leases receivable	1,874,508	1,614,819
Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable	266,911	317,170
Residential real estate | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	2,961	6,708
Fiscal year before current year	10,493	13,617
Two years before current year	14,186	6,970
Three years before current year	12,787	11,635
Four years before current year	7,638	39,493
Prior	100,455	73,891
Revolving loans amortized cost basis	118,391	164,856
Revolving loans converted to term	0	0
Loans and leases receivable	266,911	317,170
Residential real estate | Consumer | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	2,961	6,708
Fiscal year before current year	10,493	13,617
Two years before current year	14,089	6,810
Three years before current year	11,887	10,850
Four years before current year	6,861	38,143
Prior	95,687	69,496
Revolving loans amortized cost basis	116,081	161,576
Revolving loans converted to term	0	0
Loans and leases receivable	258,059	307,200
Residential real estate | Consumer | Non-performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	0
Fiscal year before current year	0	0
Two years before current year	97	160
Three years before current year	900	785
Four years before current year	777	1,350
Prior	4,768	4,395
Revolving loans amortized cost basis	2,310	3,280
Revolving loans converted to term	0	0
Loans and leases receivable	8,852	9,970
Manufactured housing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable	57,904	62,243
Manufactured housing | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	0
Fiscal year before current year	0	295
Two years before current year	296	609
Three years before current year	385	76
Four years before current year	76	41
Prior	57,147	61,222
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	57,904	62,243
Manufactured housing | Consumer | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	0
Fiscal year before current year	0	295
Two years before current year	296	609
Three years before current year	385	76
Four years before current year	76	41
Prior	52,180	56,837
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	52,937	57,858
Manufactured housing | Consumer | Non-performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	0
Fiscal year before current year	0	0
Two years before current year	0	0
Three years before current year	0	0
Four years before current year	0	0
Prior	4,967	4,385
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	4,967	4,385
Installment
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable	1,549,693	1,235,406
Installment | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	515,876	319,758
Fiscal year before current year	445,204	793,561
Two years before current year	510,825	115,473
Three years before current year	73,896	4,777
Four years before current year	2,675	516
Prior	1,217	1,321
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	1,549,693	1,235,406
Installment | Consumer | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	515,870	319,453
Fiscal year before current year	444,610	791,235
Two years before current year	509,216	114,988
Three years before current year	73,677	4,736
Four years before current year	2,668	514
Prior	1,167	1,204
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	1,547,208	1,232,130
Installment | Consumer | Non-performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	6	305
Fiscal year before current year	594	2,326
Two years before current year	1,609	485
Three years before current year	219	41
Four years before current year	7	2
Prior	50	117
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	$ 2,485	$ 3,276

X

- Definition

Amount excluding accrued interest, before allowance for credit loss, of financing receivable.

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