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Loans Receivable and Allowance for Credit Losses - Financing Receivable Credit Quality Indicators (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Term loan originated in year one | $ 1,216,866,000 |  | $ 1,216,866,000 |  | $ 5,143,826,000
Term loan originated in year two | 4,551,523,000 |  | 4,551,523,000 |  | 3,631,392,000
Term loan originated in year three | 3,377,168,000 |  | 3,377,168,000 |  | 1,696,989,000
Term loan originated in year four | 1,561,222,000 |  | 1,561,222,000 |  | 1,435,748,000
Term loan originated in year five | 1,316,500,000 |  | 1,316,500,000 |  | 1,176,479,000
Term loan originated prior to year five | 2,024,012,000 |  | 2,024,012,000 |  | 1,326,792,000
Revolving Loans | 817,519,000 |  | 817,519,000 |  | 992,314,000
Total | 14,864,810,000 |  | 14,864,810,000 |  | 15,403,540,000
Current period gross charge offs, Year One, Originated, Current Fiscal Year |  |  | 0 |  |
Current period gross charge offs, Year Two, Originated, Fiscal Year before Current Fiscal Year |  |  | 208,000 |  |
Current period gross charge offs, Year Three, Originated, Two Years before Current Fiscal Year |  |  | 54,000 |  |
Current period gross charge offs, Year Four, Originated, Three Years before Current Fiscal Year |  |  | 56,000 |  |
Current period gross charge offs, Year Five, Originated, Four Years before Current Fiscal Year |  |  | 119,000 |  |
Current period gross charge offs, Originated, More than Five Years before Current Fiscal Year |  |  | 862,000 |  |
Current period gross charge offs, Revolving |  |  | 175,000 |  |
Allowance for credit loss, writeoff | 979,000 | $ 712,000 | 1,474,000 | $ 2,215,000 |
Revolving loans converted to term loans | 0 |  | 0 |  | 0
CRE loans |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Term loan originated in year one | 389,783,000 |  | 389,783,000 |  | 2,421,631,000
Term loan originated in year two | 2,454,463,000 |  | 2,454,463,000 |  | 2,216,935,000
Term loan originated in year three | 2,138,510,000 |  | 2,138,510,000 |  | 1,381,064,000
Term loan originated in year four | 1,286,698,000 |  | 1,286,698,000 |  | 1,104,712,000
Term loan originated in year five | 1,065,216,000 |  | 1,065,216,000 |  | 1,042,368,000
Term loan originated prior to year five | 1,764,933,000 |  | 1,764,933,000 |  | 1,142,394,000
Revolving Loans | 92,557,000 |  | 92,557,000 |  | 105,476,000
Total | 9,192,160,000 |  | 9,192,160,000 |  | 9,414,580,000
Current period gross charge offs, Year One, Originated, Current Fiscal Year |  |  | 0 |  |
Current period gross charge offs, Year Two, Originated, Fiscal Year before Current Fiscal Year |  |  | 119,000 |  |
Current period gross charge offs, Year Three, Originated, Two Years before Current Fiscal Year |  |  | 0 |  |
Current period gross charge offs, Year Four, Originated, Three Years before Current Fiscal Year |  |  | 11,000 |  |
Current period gross charge offs, Year Five, Originated, Four Years before Current Fiscal Year |  |  | 34,000 |  |
Current period gross charge offs, Originated, More than Five Years before Current Fiscal Year |  |  | 397,000 |  |
Current period gross charge offs, Revolving |  |  | 0 |  |
Allowance for credit loss, writeoff | 561,000 | 476,000 | 561,000 | 1,751,000 |
C&I loans |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Term loan originated in year one | 807,860,000 |  | 807,860,000 |  | 2,329,255,000
Term loan originated in year two | 1,722,661,000 |  | 1,722,661,000 |  | 1,130,260,000
Term loan originated in year three | 964,968,000 |  | 964,968,000 |  | 311,188,000
Term loan originated in year four | 270,411,000 |  | 270,411,000 |  | 299,243,000
Term loan originated in year five | 219,960,000 |  | 219,960,000 |  | 70,741,000
Term loan originated prior to year five | 110,274,000 |  | 110,274,000 |  | 99,246,000
Revolving Loans | 708,992,000 |  | 708,992,000 |  | 869,599,000
Total | 4,805,126,000 |  | 4,805,126,000 |  | 5,109,532,000
Current period gross charge offs, Year One, Originated, Current Fiscal Year |  |  | 0 |  |
Current period gross charge offs, Year Two, Originated, Fiscal Year before Current Fiscal Year |  |  | 89,000 |  |
Current period gross charge offs, Year Three, Originated, Two Years before Current Fiscal Year |  |  | 54,000 |  |
Current period gross charge offs, Year Four, Originated, Three Years before Current Fiscal Year |  |  | 45,000 |  |
Current period gross charge offs, Year Five, Originated, Four Years before Current Fiscal Year |  |  | 85,000 |  |
Current period gross charge offs, Originated, More than Five Years before Current Fiscal Year |  |  | 465,000 |  |
Current period gross charge offs, Revolving |  |  | 0 |  |
Allowance for credit loss, writeoff | 298,000 | 172,000 | 738,000 | 349,000 |
Residential Portfolio Segment |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Term loan originated in year one | 15,658,000 |  | 15,658,000 |  | 382,935,000
Term loan originated in year two | 373,241,000 |  | 373,241,000 |  | 283,474,000
Term loan originated in year three | 273,358,000 |  | 273,358,000 |  | 1,386,000
Term loan originated in year four | 1,374,000 |  | 1,374,000 |  | 31,570,000
Term loan originated in year five | 31,159,000 |  | 31,159,000 |  | 63,360,000
Term loan originated prior to year five | 139,587,000 |  | 139,587,000 |  | 83,355,000
Revolving Loans | 0 |  | 0 |  | 0
Total | 834,377,000 |  | 834,377,000 |  | 846,080,000
Current period gross charge offs, Year One, Originated, Current Fiscal Year |  |  | 0 |  |
Current period gross charge offs, Year Two, Originated, Fiscal Year before Current Fiscal Year |  |  | 0 |  |
Current period gross charge offs, Year Three, Originated, Two Years before Current Fiscal Year |  |  | 0 |  |
Current period gross charge offs, Year Four, Originated, Three Years before Current Fiscal Year |  |  | 0 |  |
Current period gross charge offs, Year Five, Originated, Four Years before Current Fiscal Year |  |  | 0 |  |
Current period gross charge offs, Originated, More than Five Years before Current Fiscal Year |  |  | 0 |  |
Current period gross charge offs, Revolving |  |  | 0 |  |
Allowance for credit loss, writeoff | 0 | 0 | 0 | 0 |
Consumer |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Term loan originated in year one | 3,565,000 |  | 3,565,000 |  | 10,005,000
Term loan originated in year two | 1,158,000 |  | 1,158,000 |  | 723,000
Term loan originated in year three | 332,000 |  | 332,000 |  | 3,351,000
Term loan originated in year four | 2,739,000 |  | 2,739,000 |  | 223,000
Term loan originated in year five | 165,000 |  | 165,000 |  | 10,000
Term loan originated prior to year five | 9,218,000 |  | 9,218,000 |  | 1,797,000
Revolving Loans | 15,970,000 |  | 15,970,000 |  | 17,239,000
Total | 33,147,000 |  | 33,147,000 |  | 33,348,000
Current period gross charge offs, Year One, Originated, Current Fiscal Year |  |  | 0 |  |
Current period gross charge offs, Year Two, Originated, Fiscal Year before Current Fiscal Year |  |  | 0 |  |
Current period gross charge offs, Year Three, Originated, Two Years before Current Fiscal Year |  |  | 0 |  |
Current period gross charge offs, Year Four, Originated, Three Years before Current Fiscal Year |  |  | 0 |  |
Current period gross charge offs, Year Five, Originated, Four Years before Current Fiscal Year |  |  | 0 |  |
Current period gross charge offs, Originated, More than Five Years before Current Fiscal Year |  |  | 0 |  |
Current period gross charge offs, Revolving |  |  | 175,000 |  |
Allowance for credit loss, writeoff | 120,000 | $ 64,000 | 175,000 | $ 115,000 |
Pass |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Term loan originated in year one | 1,216,777,000 |  | 1,216,777,000 |  | 5,125,915,000
Term loan originated in year two | 4,511,738,000 |  | 4,511,738,000 |  | 3,567,993,000
Term loan originated in year three | 3,266,965,000 |  | 3,266,965,000 |  | 1,668,356,000
Term loan originated in year four | 1,541,527,000 |  | 1,541,527,000 |  | 1,405,364,000
Term loan originated in year five | 1,288,354,000 |  | 1,288,354,000 |  | 1,151,260,000
Term loan originated prior to year five | 1,942,903,000 |  | 1,942,903,000 |  | 1,236,460,000
Revolving Loans | 751,537,000 |  | 751,537,000 |  | 986,856,000
Total | 14,519,801,000 |  | 14,519,801,000 |  | 15,142,204,000
Pass | CRE loans |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Term loan originated in year one | 389,783,000 |  | 389,783,000 |  | 2,421,631,000
Term loan originated in year two | 2,450,867,000 |  | 2,450,867,000 |  | 2,194,073,000
Term loan originated in year three | 2,107,752,000 |  | 2,107,752,000 |  | 1,372,027,000
Term loan originated in year four | 1,281,552,000 |  | 1,281,552,000 |  | 1,076,405,000
Term loan originated in year five | 1,039,543,000 |  | 1,039,543,000 |  | 1,018,553,000
Term loan originated prior to year five | 1,693,896,000 |  | 1,693,896,000 |  | 1,064,267,000
Revolving Loans | 81,560,000 |  | 81,560,000 |  | 105,274,000
Total | 9,044,953,000 |  | 9,044,953,000 |  | 9,252,230,000
Pass | C&I loans |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Term loan originated in year one | 807,771,000 |  | 807,771,000 |  | 2,311,344,000
Term loan originated in year two | 1,686,472,000 |  | 1,686,472,000 |  | 1,090,034,000
Term loan originated in year three | 885,837,000 |  | 885,837,000 |  | 291,592,000
Term loan originated in year four | 255,862,000 |  | 255,862,000 |  | 298,133,000
Term loan originated in year five | 219,210,000 |  | 219,210,000 |  | 69,721,000
Term loan originated prior to year five | 107,364,000 |  | 107,364,000 |  | 95,531,000
Revolving Loans | 654,007,000 |  | 654,007,000 |  | 864,343,000
Total | 4,616,523,000 |  | 4,616,523,000 |  | 5,020,698,000
Pass | Residential Portfolio Segment |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Term loan originated in year one | 15,658,000 |  | 15,658,000 |  | 382,935,000
Term loan originated in year two | 373,241,000 |  | 373,241,000 |  | 283,163,000
Term loan originated in year three | 273,044,000 |  | 273,044,000 |  | 1,386,000
Term loan originated in year four | 1,374,000 |  | 1,374,000 |  | 30,603,000
Term loan originated in year five | 29,436,000 |  | 29,436,000 |  | 62,976,000
Term loan originated prior to year five | 132,782,000 |  | 132,782,000 |  | 75,242,000
Revolving Loans | 0 |  | 0 |  | 0
Total | 825,535,000 |  | 825,535,000 |  | 836,305,000
Pass | Consumer |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Term loan originated in year one | 3,565,000 |  | 3,565,000 |  | 10,005,000
Term loan originated in year two | 1,158,000 |  | 1,158,000 |  | 723,000
Term loan originated in year three | 332,000 |  | 332,000 |  | 3,351,000
Term loan originated in year four | 2,739,000 |  | 2,739,000 |  | 223,000
Term loan originated in year five | 165,000 |  | 165,000 |  | 10,000
Term loan originated prior to year five | 8,861,000 |  | 8,861,000 |  | 1,420,000
Revolving Loans | 15,970,000 |  | 15,970,000 |  | 17,239,000
Total | 32,790,000 |  | 32,790,000 |  | 32,971,000
Special mention |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Term loan originated in year one | 38,000 |  | 38,000 |  | 17,911,000
Term loan originated in year two | 21,984,000 |  | 21,984,000 |  | 52,015,000
Term loan originated in year three | 76,803,000 |  | 76,803,000 |  | 21,008,000
Term loan originated in year four | 13,999,000 |  | 13,999,000 |  | 20,536,000
Term loan originated in year five | 22,962,000 |  | 22,962,000 |  | 13,565,000
Term loan originated prior to year five | 19,165,000 |  | 19,165,000 |  | 26,770,000
Revolving Loans | 55,855,000 |  | 55,855,000 |  | 5,458,000
Total | 210,806,000 |  | 210,806,000 |  | 157,263,000
Special mention | CRE loans |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Term loan originated in year one | 0 |  | 0 |  | 0
Term loan originated in year two | 2,772,000 |  | 2,772,000 |  | 14,622,000
Term loan originated in year three | 22,388,000 |  | 22,388,000 |  | 7,301,000
Term loan originated in year four | 4,145,000 |  | 4,145,000 |  | 20,426,000
Term loan originated in year five | 22,789,000 |  | 22,789,000 |  | 13,565,000
Term loan originated prior to year five | 19,165,000 |  | 19,165,000 |  | 26,746,000
Revolving Loans | 10,997,000 |  | 10,997,000 |  | 202,000
Total | 82,256,000 |  | 82,256,000 |  | 82,862,000
Special mention | C&I loans |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Term loan originated in year one | 38,000 |  | 38,000 |  | 17,911,000
Term loan originated in year two | 19,212,000 |  | 19,212,000 |  | 37,393,000
Term loan originated in year three | 54,415,000 |  | 54,415,000 |  | 13,707,000
Term loan originated in year four | 9,854,000 |  | 9,854,000 |  | 110,000
Term loan originated in year five | 173,000 |  | 173,000 |  | 0
Term loan originated prior to year five | 0 |  | 0 |  | 24,000
Revolving Loans | 44,858,000 |  | 44,858,000 |  | 5,256,000
Total | 128,550,000 |  | 128,550,000 |  | 74,401,000
Special mention | Residential Portfolio Segment |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Term loan originated in year one | 0 |  | 0 |  | 0
Term loan originated in year two | 0 |  | 0 |  | 0
Term loan originated in year three | 0 |  | 0 |  | 0
Term loan originated in year four | 0 |  | 0 |  | 0
Term loan originated in year five | 0 |  | 0 |  | 0
Term loan originated prior to year five | 0 |  | 0 |  | 0
Revolving Loans | 0 |  | 0 |  | 0
Total | 0 |  | 0 |  | 0
Special mention | Consumer |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Term loan originated in year one | 0 |  | 0 |  | 0
Term loan originated in year two | 0 |  | 0 |  | 0
Term loan originated in year three | 0 |  | 0 |  | 0
Term loan originated in year four | 0 |  | 0 |  | 0
Term loan originated in year five | 0 |  | 0 |  | 0
Term loan originated prior to year five | 0 |  | 0 |  | 0
Revolving Loans | 0 |  | 0 |  | 0
Total | 0 |  | 0 |  | 0
Substandard |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Term loan originated in year one | 51,000 |  | 51,000 |  | 0
Term loan originated in year two | 17,801,000 |  | 17,801,000 |  | 11,384,000
Term loan originated in year three | 33,400,000 |  | 33,400,000 |  | 7,625,000
Term loan originated in year four | 5,696,000 |  | 5,696,000 |  | 9,848,000
Term loan originated in year five | 5,184,000 |  | 5,184,000 |  | 11,654,000
Term loan originated prior to year five | 61,944,000 |  | 61,944,000 |  | 63,562,000
Revolving Loans | 10,127,000 |  | 10,127,000 |  | 0
Total | 134,203,000 |  | 134,203,000 |  | 104,073,000
Substandard | CRE loans |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Term loan originated in year one | 0 |  | 0 |  | 0
Term loan originated in year two | 824,000 |  | 824,000 |  | 8,240,000
Term loan originated in year three | 8,370,000 |  | 8,370,000 |  | 1,736,000
Term loan originated in year four | 1,001,000 |  | 1,001,000 |  | 7,881,000
Term loan originated in year five | 2,884,000 |  | 2,884,000 |  | 10,250,000
Term loan originated prior to year five | 51,872,000 |  | 51,872,000 |  | 51,381,000
Revolving Loans | 0 |  | 0 |  | 0
Total | 64,951,000 |  | 64,951,000 |  | 79,488,000
Substandard | C&I loans |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Term loan originated in year one | 51,000 |  | 51,000 |  | 0
Term loan originated in year two | 16,977,000 |  | 16,977,000 |  | 2,833,000
Term loan originated in year three | 24,716,000 |  | 24,716,000 |  | 5,889,000
Term loan originated in year four | 4,695,000 |  | 4,695,000 |  | 1,000,000
Term loan originated in year five | 577,000 |  | 577,000 |  | 1,020,000
Term loan originated prior to year five | 2,910,000 |  | 2,910,000 |  | 3,691,000
Revolving Loans | 10,127,000 |  | 10,127,000 |  | 0
Total | 60,053,000 |  | 60,053,000 |  | 14,433,000
Substandard | Residential Portfolio Segment |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Term loan originated in year one | 0 |  | 0 |  | 0
Term loan originated in year two | 0 |  | 0 |  | 311,000
Term loan originated in year three | 314,000 |  | 314,000 |  | 0
Term loan originated in year four | 0 |  | 0 |  | 967,000
Term loan originated in year five | 1,723,000 |  | 1,723,000 |  | 384,000
Term loan originated prior to year five | 6,805,000 |  | 6,805,000 |  | 8,113,000
Revolving Loans | 0 |  | 0 |  | 0
Total | 8,842,000 |  | 8,842,000 |  | 9,775,000
Substandard | Consumer |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Term loan originated in year one | 0 |  | 0 |  | 0
Term loan originated in year two | 0 |  | 0 |  | 0
Term loan originated in year three | 0 |  | 0 |  | 0
Term loan originated in year four | 0 |  | 0 |  | 0
Term loan originated in year five | 0 |  | 0 |  | 0
Term loan originated prior to year five | 357,000 |  | 357,000 |  | 377,000
Revolving Loans | 0 |  | 0 |  | 0
Total | $ 357,000 |  | $ 357,000 |  | $ 377,000

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