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Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases - Credit Ratings (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	$ 2,885,998	$ 1,515,239
Fiscal year before current year	1,162,342	1,599,431
Two years before current year	983,444	786,506
Three years before current year	553,607	1,055,134
Four years before current year	732,071	578,390
Prior	1,103,651	1,130,969
Revolving loans amortized cost basis	1,597,185	909,699
Revolving loans converted to term	0	0
Loans and leases receivable	9,018,298	7,575,368
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable	6,886,232	5,960,549
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable	2,132,066	1,614,819
Commercial loans and leases receivable | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	1,803,457	1,188,773
Fiscal year before current year	762,301	791,958
Two years before current year	618,104	663,454
Three years before current year	509,267	1,038,646
Four years before current year	723,019	538,340
Prior	962,716	994,535
Revolving loans amortized cost basis	1,507,368	744,843
Revolving loans converted to term	0	0
Loans and leases receivable	6,886,232	5,960,549
Multi-family
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable	1,486,308	1,761,301
Multi-family | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	403,075	150,835
Fiscal year before current year	133,452	23,716
Two years before current year	23,068	299,319
Three years before current year	219,006	590,608
Four years before current year	339,368	245,946
Prior	368,339	450,877
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	1,486,308	1,761,301
Multi-family | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	403,075	150,835
Fiscal year before current year	133,452	23,716
Two years before current year	23,068	299,319
Three years before current year	209,070	535,510
Four years before current year	282,663	227,296
Prior	316,491	420,809
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	1,367,819	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	9,936	20,901
Four years before current year	18,489	10,394
Prior	28,776	26,708
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	57,201	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	38,216	8,256
Prior	23,072	3,360
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	61,288	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	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 and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable	3,424,783	2,289,441
Commercial and industrial | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	993,278	752,438
Fiscal year before current year	348,710	381,057
Two years before current year	279,545	161,444
Three years before current year	103,181	122,807
Four years before current year	97,470	54,201
Prior	96,716	74,245
Revolving loans amortized cost basis	1,505,883	743,249
Revolving loans converted to term	0	0
Loans and leases receivable	3,424,783	2,289,441
Commercial and industrial | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	974,016	729,270
Fiscal year before current year	337,045	373,050
Two years before current year	266,677	141,943
Three years before current year	86,691	116,793
Four years before current year	55,536	45,367
Prior	89,860	71,502
Revolving loans amortized cost basis	1,484,287	717,007
Revolving loans converted to term	0	0
Loans and leases receivable	3,294,112	2,194,932
Commercial and industrial | Special Mention | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	476	13,200
Fiscal year before current year	1,408	1,117
Two years before current year	3,325	436
Three years before current year	4,904	113
Four years before current year	36,252	516
Prior	92	21
Revolving loans amortized cost basis	14,662	17,524
Revolving loans converted to term	0	0
Loans and leases receivable	61,119	32,927
Commercial and industrial | Substandard | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	18,786	9,968
Fiscal year before current year	10,257	6,890
Two years before current year	9,543	19,065
Three years before current year	11,586	5,901
Four years before current year	5,682	8,318
Prior	6,764	2,722
Revolving loans amortized cost basis	6,934	8,718
Revolving loans converted to term	0	0
Loans and leases receivable	69,552	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	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	654,922	572,338
Commercial real estate owner occupied | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	213,102	82,343
Fiscal year before current year	59,348	176,289
Two years before current year	131,252	82,114
Three years before current year	70,993	80,040
Four years before current year	68,941	48,741
Prior	110,614	102,070
Revolving loans amortized cost basis	672	741
Revolving loans converted to term	0	0
Loans and leases receivable	654,922	572,338
Commercial real estate owner occupied | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	213,102	82,343
Fiscal year before current year	59,348	168,977
Two years before current year	124,626	72,615
Three years before current year	60,993	70,642
Four years before current year	58,073	46,510
Prior	99,219	91,798
Revolving loans amortized cost basis	672	741
Revolving loans converted to term	0	0
Loans and leases receivable	616,033	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	2,876	0
Three years before current year	318	9,056
Four years before current year	2,044	0
Prior	572	555
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	5,810	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	3,750	9,499
Three years before current year	9,682	342
Four years before current year	8,824	2,231
Prior	10,823	9,717
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	33,079	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	1,121,238	1,196,564
Commercial real estate non-owner occupied | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	136,897	183,225
Fiscal year before current year	171,592	105,430
Two years before current year	106,617	115,623
Three years before current year	111,259	245,191
Four years before current year	217,240	179,752
Prior	377,633	367,343
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	1,121,238	1,196,564
Commercial real estate non-owner occupied | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	136,897	143,231
Fiscal year before current year	149,898	105,430
Two years before current year	95,504	97,882
Three years before current year	66,040	157,835
Four years before current year	153,509	155,168
Prior	310,435	313,559
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	912,283	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	21,694	0
Two years before current year	11,113	0
Three years before current year	9,373	66,745
Four years before current year	43,215	24,218
Prior	20,540	14,613
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	105,935	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	35,846	20,611
Four years before current year	20,516	366
Prior	46,658	39,171
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	103,020	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	198,981	140,905
Construction | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	57,105	19,932
Fiscal year before current year	49,199	105,466
Two years before current year	77,622	4,954
Three years before current year	4,828	0
Four years before current year	0	9,700
Prior	9,414	0
Revolving loans amortized cost basis	813	853
Revolving loans converted to term	0	0
Loans and leases receivable	198,981	140,905
Construction | Pass | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	57,105	19,932
Fiscal year before current year	49,199	105,466
Two years before current year	77,622	4,954
Three years before current year	4,828	0
Four years before current year	0	9,700
Prior	9,414	0
Revolving loans amortized cost basis	813	853
Revolving loans converted to term	0	0
Loans and leases receivable	198,981	140,905
Construction | 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	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 | 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	1,082,541	326,466
Fiscal year before current year	400,041	807,473
Two years before current year	365,340	123,052
Three years before current year	44,340	16,488
Four years before current year	9,052	40,050
Prior	140,935	136,434
Revolving loans amortized cost basis	89,817	164,856
Revolving loans converted to term	0	0
Loans and leases receivable	2,132,066	1,614,819
Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable	334,730	317,170
Residential real estate | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	107,854	6,708
Fiscal year before current year	8,251	13,617
Two years before current year	21,431	6,970
Three years before current year	12,404	11,635
Four years before current year	7,376	39,493
Prior	87,622	73,891
Revolving loans amortized cost basis	89,792	164,856
Revolving loans converted to term	0	0
Loans and leases receivable	334,730	317,170
Residential real estate | Consumer | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	107,854	6,708
Fiscal year before current year	8,251	13,617
Two years before current year	21,096	6,810
Three years before current year	11,389	10,850
Four years before current year	6,707	38,143
Prior	84,035	69,496
Revolving loans amortized cost basis	87,438	161,576
Revolving loans converted to term	0	0
Loans and leases receivable	326,770	307,200
Residential real estate | Consumer | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	0	0
Fiscal year before current year	0	0
Two years before current year	335	160
Three years before current year	1,015	785
Four years before current year	669	1,350
Prior	3,587	4,395
Revolving loans amortized cost basis	2,354	3,280
Revolving loans converted to term	0	0
Loans and leases receivable	7,960	9,970
Manufactured housing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable	52,861	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	253	609
Three years before current year	299	76
Four years before current year	73	41
Prior	52,236	61,222
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	52,861	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	253	609
Three years before current year	299	76
Four years before current year	73	41
Prior	47,537	56,837
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	48,162	57,858
Manufactured housing | Consumer | Nonperforming
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	4,699	4,385
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	4,699	4,385
Installment
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and leases receivable	1,744,475	1,235,406
Installment | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	974,687	319,758
Fiscal year before current year	391,790	793,561
Two years before current year	343,656	115,473
Three years before current year	31,637	4,777
Four years before current year	1,603	516
Prior	1,077	1,321
Revolving loans amortized cost basis	25	0
Revolving loans converted to term	0	0
Loans and leases receivable	1,744,475	1,235,406
Installment | Consumer | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	973,525	319,453
Fiscal year before current year	390,788	791,235
Two years before current year	341,582	114,988
Three years before current year	31,481	4,736
Four years before current year	1,601	514
Prior	1,016	1,204
Revolving loans amortized cost basis	25	0
Revolving loans converted to term	0	0
Loans and leases receivable	1,740,018	1,232,130
Installment | Consumer | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Current year	1,162	305
Fiscal year before current year	1,002	2,326
Two years before current year	2,074	485
Three years before current year	156	41
Four years before current year	2	2
Prior	61	117
Revolving loans amortized cost basis	0	0
Revolving loans converted to term	0	0
Loans and leases receivable	$ 4,457	$ 3,276

X

- Definition

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

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Amount excluding accrued interest of financing receivable originated more than five years prior to current fiscal year.

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Amount excluding accrued interest of financing receivable originated three years prior to current fiscal year.

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