Loans Receivable and Allowance for Credit Losses - Financing Receivable Credit Quality Indicators (Details) - USD ($)	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	$ 2,600,408,000	$ 1,845,145,000
Term loan originated in year two	1,199,325,000	4,084,313,000
Term loan originated in year three	3,491,112,000	3,056,873,000
Term loan originated in year four	2,576,050,000	1,470,519,000
Term loan originated in year five	1,225,965,000	1,212,639,000
Term loan originated prior to year five	1,777,935,000	1,543,568,000
Revolving Loans	747,477,000	640,562,000
Total	13,618,272,000	13,853,619,000
Current period gross charge offs, Year One, Originated, Current Fiscal Year	0	5,114,000
Current period gross charge offs, Year Two, Originated, Fiscal Year before Current Fiscal Year	2,214,000	12,638,000
Current period gross charge offs, Year Three, Originated, Two Years before Current Fiscal Year	27,404,000	16,020,000
Current period gross charge offs, Year Four, Originated, Three Years before Current Fiscal Year	107,000	361,000
Current period gross charge offs, Year Five, Originated, Four Years before Current Fiscal Year	101,000	537,000
Current period gross charge offs, Originated, More than Five Years before Current Fiscal Year	944,000	2,480,000
Current period gross charge offs, Revolving	318,000	370,000
Allowance for credit loss, writeoff	31,088,000	37,520,000	$ 12,389,000
Revolving loans converted to term loans	0	0
CRE loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	866,696,000	623,058,000
Term loan originated in year two	580,233,000	2,432,696,000
Term loan originated in year three	2,331,158,000	2,068,615,000
Term loan originated in year four	1,926,172,000	1,244,883,000
Term loan originated in year five	1,119,129,000	1,004,529,000
Term loan originated prior to year five	1,585,556,000	1,344,677,000
Revolving Loans	118,064,000	79,426,000
Total	8,527,008,000	8,797,884,000
Current period gross charge offs, Year One, Originated, Current Fiscal Year	0	103,000
Current period gross charge offs, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	315,000
Current period gross charge offs, Year Three, Originated, Two Years before Current Fiscal Year	165,000	0
Current period gross charge offs, Year Four, Originated, Three Years before Current Fiscal Year	0	233,000
Current period gross charge offs, Year Five, Originated, Four Years before Current Fiscal Year	101,000	355,000
Current period gross charge offs, Originated, More than Five Years before Current Fiscal Year	842,000	1,941,000
Current period gross charge offs, Revolving	0	0
Allowance for credit loss, writeoff	1,108,000	2,947,000	6,803,000
C&I loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	1,440,787,000	1,124,120,000
Term loan originated in year two	535,768,000	1,285,421,000
Term loan originated in year three	814,822,000	723,689,000
Term loan originated in year four	409,624,000	220,376,000
Term loan originated in year five	102,838,000	177,719,000
Term loan originated prior to year five	58,931,000	63,377,000
Revolving Loans	604,826,000	540,342,000
Total	3,967,596,000	4,135,044,000
Current period gross charge offs, Year One, Originated, Current Fiscal Year	0	5,011,000
Current period gross charge offs, Year Two, Originated, Fiscal Year before Current Fiscal Year	2,214,000	12,323,000
Current period gross charge offs, Year Three, Originated, Two Years before Current Fiscal Year	27,239,000	16,020,000
Current period gross charge offs, Year Four, Originated, Three Years before Current Fiscal Year	107,000	128,000
Current period gross charge offs, Year Five, Originated, Four Years before Current Fiscal Year	0	182,000
Current period gross charge offs, Originated, More than Five Years before Current Fiscal Year	102,000	539,000
Current period gross charge offs, Revolving	0	0
Allowance for credit loss, writeoff	29,662,000	34,203,000	5,160,000
Residential Mortgage Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	286,539,000	93,982,000
Term loan originated in year two	82,682,000	365,252,000
Term loan originated in year three	344,940,000	264,291,000
Term loan originated in year four	240,092,000	3,192,000
Term loan originated in year five	3,123,000	30,020,000
Term loan originated prior to year five	125,083,000	126,950,000
Revolving Loans	0	0
Total	1,082,459,000	883,687,000
Current period gross charge offs, Year One, Originated, Current Fiscal Year	0	0
Current period gross charge offs, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Current period gross charge offs, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Current period gross charge offs, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Current period gross charge offs, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Current period gross charge offs, Originated, More than Five Years before Current Fiscal Year	0	0
Current period gross charge offs, Revolving	0	0
Allowance for credit loss, writeoff	0	0	22,000
Consumer and other loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	6,386,000	3,985,000
Term loan originated in year two	642,000	944,000
Term loan originated in year three	192,000	278,000
Term loan originated in year four	162,000	2,068,000
Term loan originated in year five	875,000	371,000
Term loan originated prior to year five	8,365,000	8,564,000
Revolving Loans	24,587,000	20,794,000
Total	41,209,000	37,004,000
Current period gross charge offs, Year One, Originated, Current Fiscal Year	0	0
Current period gross charge offs, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Current period gross charge offs, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Current period gross charge offs, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Current period gross charge offs, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Current period gross charge offs, Originated, More than Five Years before Current Fiscal Year	0	0
Current period gross charge offs, Revolving	318,000	370,000
Allowance for credit loss, writeoff	318,000	370,000	$ 404,000
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	2,586,434,000	1,828,244,000
Term loan originated in year two	1,142,023,000	4,004,137,000
Term loan originated in year three	3,404,507,000	2,993,939,000
Term loan originated in year four	2,472,902,000	1,446,220,000
Term loan originated in year five	1,216,727,000	1,188,732,000
Term loan originated prior to year five	1,708,717,000	1,490,420,000
Revolving Loans	636,993,000	579,486,000
Total	13,168,303,000	13,531,178,000
Pass \| CRE loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	866,696,000	623,058,000
Term loan originated in year two	564,267,000	2,429,146,000
Term loan originated in year three	2,316,371,000	2,045,863,000
Term loan originated in year four	1,885,509,000	1,239,654,000
Term loan originated in year five	1,111,807,000	996,483,000
Term loan originated prior to year five	1,535,735,000	1,297,295,000
Revolving Loans	117,265,000	79,426,000
Total	8,397,650,000	8,710,925,000
Pass \| C&I loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	1,426,813,000	1,107,219,000
Term loan originated in year two	494,432,000	1,208,795,000
Term loan originated in year three	743,004,000	683,821,000
Term loan originated in year four	348,107,000	203,142,000
Term loan originated in year five	102,725,000	162,815,000
Term loan originated prior to year five	43,377,000	61,019,000
Revolving Loans	495,141,000	479,266,000
Total	3,653,599,000	3,906,077,000
Pass \| Residential Mortgage Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	286,539,000	93,982,000
Term loan originated in year two	82,682,000	365,252,000
Term loan originated in year three	344,940,000	263,977,000
Term loan originated in year four	239,124,000	1,356,000
Term loan originated in year five	1,320,000	29,063,000
Term loan originated prior to year five	121,287,000	123,885,000
Revolving Loans	0	0
Total	1,075,892,000	877,515,000
Pass \| Consumer and other loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	6,386,000	3,985,000
Term loan originated in year two	642,000	944,000
Term loan originated in year three	192,000	278,000
Term loan originated in year four	162,000	2,068,000
Term loan originated in year five	875,000	371,000
Term loan originated prior to year five	8,318,000	8,221,000
Revolving Loans	24,587,000	20,794,000
Total	41,162,000	36,661,000
Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	1,773,000	9,743,000
Term loan originated in year two	31,116,000	25,414,000
Term loan originated in year three	33,710,000	46,840,000
Term loan originated in year four	31,997,000	11,115,000
Term loan originated in year five	1,853,000	20,577,000
Term loan originated prior to year five	23,470,000	5,196,000
Revolving Loans	55,154,000	60,107,000
Total	179,073,000	178,992,000
Special mention \| CRE loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	0
Term loan originated in year two	15,000,000	2,001,000
Term loan originated in year three	9,879,000	15,452,000
Term loan originated in year four	7,800,000	2,518,000
Term loan originated in year five	1,853,000	5,963,000
Term loan originated prior to year five	8,778,000	5,196,000
Revolving Loans	799,000	0
Total	44,109,000	31,130,000
Allowance for credit loss, writeoff		29,600,000
Special mention \| C&I loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	1,773,000	9,743,000
Term loan originated in year two	16,116,000	23,413,000
Term loan originated in year three	23,831,000	31,388,000
Term loan originated in year four	24,197,000	8,597,000
Term loan originated in year five	0	14,614,000
Term loan originated prior to year five	14,692,000	0
Revolving Loans	54,355,000	60,107,000
Total	134,964,000	147,862,000
Special mention \| Residential Mortgage Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	0
Term loan originated in year two	0	0
Term loan originated in year three	0	0
Term loan originated in year four	0	0
Term loan originated in year five	0	0
Term loan originated prior to year five	0	0
Revolving Loans	0	0
Total	0	0
Special mention \| Consumer and other loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	0
Term loan originated in year two	0	0
Term loan originated in year three	0	0
Term loan originated in year four	0	0
Term loan originated in year five	0	0
Term loan originated prior to year five	0	0
Revolving Loans	0	0
Total	0	0
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	11,990,000	7,158,000
Term loan originated in year two	8,740,000	54,762,000
Term loan originated in year three	24,737,000	16,094,000
Term loan originated in year four	71,151,000	13,184,000
Term loan originated in year five	7,385,000	3,330,000
Term loan originated prior to year five	45,748,000	47,952,000
Revolving Loans	55,330,000	969,000
Total	225,081,000	143,449,000
Substandard \| CRE loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	0
Term loan originated in year two	966,000	1,549,000
Term loan originated in year three	4,908,000	7,300,000
Term loan originated in year four	32,863,000	2,711,000
Term loan originated in year five	5,469,000	2,083,000
Term loan originated prior to year five	41,043,000	42,186,000
Revolving Loans	0	0
Total	85,249,000	55,829,000
Substandard \| C&I loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	11,990,000	7,158,000
Term loan originated in year two	7,774,000	53,213,000
Term loan originated in year three	19,829,000	8,480,000
Term loan originated in year four	37,320,000	8,637,000
Term loan originated in year five	113,000	290,000
Term loan originated prior to year five	862,000	2,358,000
Revolving Loans	55,330,000	969,000
Total	133,218,000	81,105,000
Substandard \| Residential Mortgage Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	0
Term loan originated in year two	0	0
Term loan originated in year three	0	314,000
Term loan originated in year four	968,000	1,836,000
Term loan originated in year five	1,803,000	957,000
Term loan originated prior to year five	3,796,000	3,065,000
Revolving Loans	0	0
Total	6,567,000	6,172,000
Substandard \| Consumer and other loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	0	0
Term loan originated in year two	0	0
Term loan originated in year three	0	0
Term loan originated in year four	0	0
Term loan originated in year five	0	0
Term loan originated prior to year five	47,000	343,000
Revolving Loans	0	0
Total	47,000	$ 343,000
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	211,000
Term loan originated in year two	17,446,000
Term loan originated in year three	28,158,000
Term loan originated in year four	0
Term loan originated in year five	0
Term loan originated prior to year five	0
Revolving Loans	0
Total	45,815,000
Doubtful \| C&I loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loan originated in year one	211,000
Term loan originated in year two	17,446,000
Term loan originated in year three	28,158,000
Term loan originated in year four	0
Term loan originated in year five	0
Term loan originated prior to year five	0
Revolving Loans	0
Total	$ 45,815,000

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Current period gross charge offs, Year Five, Originated, Four Years before Current Fiscal Year

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Current period gross charge offs, Year Four, Originated, Three Years before Current Fiscal Year

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Current period gross charge offs, Year One, Originated, Current Fiscal Year

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Current period gross charge offs, Year Three, Originated, Two Years before Current Fiscal Year

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- Definition

Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Amortized cost, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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