BankUnited (BKU) 10-Q 25 Apr 24 2024 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2024	Apr. 23, 2024
Document Information [Line Items]
Document Type	10-Q
Document Transition Report	false
Document Period End Date	Mar. 31, 2024
Entity File Number	001-35039
Entity Registrant Name	BankUnited, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	27-0162450
Entity Address, Address Line One	14817 Oak Lane
Entity Address, City or Town	Miami Lakes
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33016
City Area Code	305
Local Phone Number	569-2000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Entity Common Stock Shares Outstanding		74,756,756
Entity Central Index Key	0001504008
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Amendment Flag	false
Document Quarterly Report	true
Current Fiscal Year End Date	--12-31
NEW YORK STOCK EXCHANGE, INC.
Document Information [Line Items]
Title of 12(b) Security	Common Stock, $0.01 Par Value
Trading Symbol	BKU
Security Exchange Name	NYSE

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Cash and due from banks:
Non-interest bearing	$ 13,773	$ 14,945
Interest bearing	407,443	573,338
Cash and cash equivalents	421,216	588,283
Investment securities (including securities reported at fair value of $8,914,959 and $8,867,354)	8,924,959	8,877,354
Non-marketable equity securities	252,609	310,084
Loans	24,226,300	24,633,684
Allowance for credit losses	(217,556)
Loans, net	24,008,744	24,430,995
Bank owned life insurance	295,970	318,459
Operating lease equipment, net	329,025	371,909
Goodwill	77,637	77,637
Other assets	795,494	786,886
Total assets	35,105,654	35,761,607
Demand deposits:
Non-interest bearing	7,239,604	6,835,236
Interest bearing	3,549,141	3,403,539
Savings and money market	11,122,916	11,135,708
Time	5,115,703	5,163,995
Total deposits	27,027,364	26,538,478
FHLB advances	3,905,000	5,115,000
Notes and other borrowings	708,978	708,973
Other liabilities	823,920	821,235
Total liabilities	32,465,262	33,183,686
Commitments and contingencies
Stockholders' equity:
Common Stock, Value, Issued	748	744
Paid-in capital	286,169	283,642
Retained earnings	2,677,403	2,650,956
Accumulated other comprehensive loss	(323,928)	(357,421)
Total stockholders' equity	2,640,392	2,577,921
Total liabilities and stockholders' equity	35,105,654	35,761,607
Interest income on loans
Cash and due from banks:
Allowance for credit losses	$ (217,556)	$ (202,689)

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
ASSETS
Investment securities recorded at fair value	$ 8,914,959	$ 8,867,354
Stockholders' equity:
Common stock, par value (in Dollars per Share)		$ 0.01
Common stock, shares authorized (in Shares)	400,000,000	400,000,000
Common stock, shares issued (in Shares)	74,772,706	74,372,505
Common stock, shares outstanding (in Shares)	74,772,706	74,372,505

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Interest income:
Loans	$ 347,257	$ 308,795
Investment securities	124,179	118,758
Other	10,038	12,863
Total interest income	481,474	440,416
Interest expense:
Deposits	209,998	133,630
Borrowings	56,619	78,912
Total interest expense	266,617	212,542
Net interest income before provision for credit losses	214,857	227,874
Provision for credit losses	15,285	19,788
Net interest income after provision for credit losses	199,572	208,086
Non-interest income:
Deposit service charges and fees	5,499	5,545
Gain (loss) on investment securities, net	775	(12,549)
Lease financing	11,440	13,109
Other non-interest income	9,163	10,430
Total non-interest income	26,877	16,535
Non-interest expense:
Employee compensation and benefits	75,920	71,051
Occupancy and equipment	10,569	10,802
Deposit insurance expense	13,530	7,907
Professional fees	2,510	2,918
Technology	20,315	21,726
Depreciation of operating lease equipment	9,213	11,521
Other non-interest expense	27,183	26,855
Total non-interest expense	159,240	152,780
Income before income taxes	67,209	71,841
Provision for income taxes	19,229	18,959
Net income	$ 47,980	$ 52,882
Earnings per common share, basic	$ 0.64	$ 0.71
Earnings per common share, diluted	$ 0.64	$ 0.70

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 47,980	$ 52,882
Unrealized gains (losses) on investment securities available for sale:
Net unrealized holding gains arising during the period	(26,936)	(74,936)
Reclassification adjustment for net securities (gains) losses realized in income	21	(556)
Net change in unrealized gains (losses) on securities available for sale	26,957	74,380
Unrealized gains (losses) on derivative instruments:
Net unrealized holding gains (losses) arising during the period	21,204	(2,165)
Reclassification adjustment for net gains realized in income	(14,668)	(8,994)
Net change in unrealized gains (losses) on derivative instruments	6,536	(11,159)
Other comprehensive income	33,493	63,221
Comprehensive income	$ 81,473	$ 116,103

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities:
Net income	$ 47,980	$ 52,882
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization and accretion, net	(3,690)	(2,078)
Provision for credit losses	15,285	19,788
(Gain) loss on investment securities, net	(775)	12,549
Share based compensation	5,883	5,280
Depreciation and amortization	17,213	19,430
Deferred income taxes	(5,865)	9,391
Proceeds from sale of loans held for sale, net	37,431	103,679
Other:
Increase (Decrease) in Other Operating Assets	(17,523)	(53,771)
Decrease in other liabilities	(29,443)	(25,782)
Net cash provided by operating activities	66,496	141,368
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchases of investment securities	(309,549)	(74,185)
Proceeds from repayments and calls of investment securities	266,878	251,512
Proceeds from sale of investment securities	32,067	131,879
Purchases of non-marketable equity securities	(108,063)	(263,500)
Proceeds from redemption of non-marketable equity securities	165,538	172,975
Purchases of loans	(66,570)	(186,792)
Loan originations and repayments, net	440,699	73,367
Proceeds from Life Insurance Policy	32,144	0
Disposition of operating lease equipment	46,418	2,073
Other investing activities	(12,072)	(11,105)
Net cash provided by investing activities	487,490	96,224
Cash flows from financing activities:
Net increase (decrease) in deposits	488,886	(1,786,436)
Net decrease in federal funds purchased	0	(190,000)
Additions to FHLB borrowings	285,000	2,455,000
Repayments of FHLB borrowings	(1,495,000)	(325,000)
Dividends paid	(20,706)	(19,346)
Repurchase of common stock	0	(55,022)
Other financing activities	20,767	14,563
Net cash provided by (used in) financing activities	(721,053)	93,759
Net increase (decrease) in cash and cash equivalents	(167,067)	331,351
Cash and cash equivalents, beginning of period	588,283	572,647
Cash and cash equivalents, end of period	421,216	903,998
Supplemental Cash Flow Information [Abstract]
Interest paid	261,376	184,657
Income taxes paid	36,907	8,947
Supplemental schedule of non-cash investing and financing activities:
Transfers from loans to loans held for sale	37,576	103,398
Dividends declared, not paid	$ 21,533	$ 19,637

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($)	Total	Cumulative Effect, Period of Adoption, Adjusted Balance	Common Stock	Common Stock Cumulative Effect, Period of Adoption, Adjusted Balance	Paid-in Capital	Paid-in Capital Cumulative Effect, Period of Adoption, Adjusted Balance	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjusted Balance	Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss Cumulative Effect, Period of Adoption, Adjusted Balance
Shares, Outstanding, Beginning Balance at Dec. 31, 2022			75,674,587
Balance at Dec. 31, 2022	$ 2,435,981,000	$ 2,437,317,000	$ 757,000	$ 757,000	$ 321,729,000	$ 321,729,000	$ 2,551,400,000	$ 2,552,736,000	$ (437,905,000)	$ (437,905,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	116,103,000		$ 0		0		52,882,000		63,221,000
Stock Dividends, Shares			0
Dividends, Common Stock, Cash	$ (19,637,000)		$ 0		0		(19,637,000)		0
Common Stock, Dividends, Per Share, Declared	$ 0.27
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture and Exercises	$ 2,633,000		$ 3,000		2,630,000		0		0
Shares Issued, Shares, Share-Based Payment Arrangement, after forfeitures and exercises			383,023
Stock Repurchased During Period, Shares			(1,634,245)
Stock Repurchased During Period, Value	(55,022,000)		$ (16,000)		(55,006,000)		0		0
Balance (in Shares) at Mar. 31, 2023			74,423,365
Balance at Mar. 31, 2023	2,481,394,000		$ 744,000		269,353,000		2,585,981,000		(374,684,000)
Shares, Outstanding, Beginning Balance at Dec. 31, 2023			74,372,505
Balance at Dec. 31, 2023	2,577,921,000		$ 744,000		283,642,000		2,650,956,000		(357,421,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	81,473,000		$ 0		0		47,980,000		33,493,000
Stock Dividends, Shares			0
Dividends, Common Stock, Cash	$ (21,533,000)		$ 0		0		(21,533,000)		0
Common Stock, Dividends, Per Share, Declared	$ 0.29
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture and Exercises	$ 2,531,000		$ 4,000		2,527,000		0		0
Shares Issued, Shares, Share-Based Payment Arrangement, after forfeitures and exercises			400,201
Balance (in Shares) at Mar. 31, 2024			74,772,706
Balance at Mar. 31, 2024	$ 2,640,392,000		$ 748,000		$ 286,169,000		$ 2,677,403,000		$ (323,928,000)

Basis of Presentation and Summa

Basis of Presentation and Summary of Significant Accounting Policies Basis of Presentation	3 Months Ended
	Mar. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	Note 1 Basis of Presentation and Summary of Significant Accounting Policies BankUnited, Inc. is a national bank holding company with one wholly-owned subsidiary, BankUnited, collectively, the Company. BankUnited, a national banking association headquartered in Miami Lakes, Florida, provides a full range of banking services to individual and corporate customers through banking centers in Florida, the New York metropolitan area and Dallas, Texas. The Bank also offers certain commercial lending and deposit products through national platforms and regional wholesale banking offices. The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X of the SEC. Accordingly, these financial statements do not include all of the information and footnotes required for a fair presentation of financial position, results of operations and cash flows in conformity with GAAP and should be read in conjunction with the Company’s consolidated financial statements and the notes thereto appearing in BKU’s Annual Report on Form 10-K for the year ended December 31, 2023, filed with the SEC. In the opinion of management, all adjustments, consisting of normal recurring adjustments, considered necessary for a fair presentation have been included. Operating results for the three months ended March 31, 2024, are not necessarily indicative of the results that may be expected in future periods. The Company has a single operating segment and thus a single reportable segment. While management monitors the revenue streams of its various business units, the business units serve a similar base of primarily commercial clients, providing a similar range of products and services, managed through similar processes and platforms. The Company’s chief operating decision maker makes company-wide resource allocation decisions and assessments of performance based on a collective assessment of the Company’s operations. Accounting Estimates In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, and expenses and disclosures of contingent assets and liabilities. Actual results could differ significantly from these estimates. The most significant estimate impacting the Company's consolidated financial statements is the ACL. New Accounting Pronouncements Adopted During the Three Months Ended March 31, 2024 ASU No. 2023-02— Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures using the Proportional Amortization Method (A Consensus of the Emerging Issues Task Force). This ASU was issued to expand the use of the proportional amortization method of accounting for equity investments in tax credit programs beyond those in LIHTC programs. The ASU allows entities to elect the proportional amortization method, on a tax-credit-program-by-tax-credit-program basis, for all equity investments in tax credit programs meeting the eligibility criteria established. The Company adopted this ASU in the first quarter of 2024. There was no impact upon adoption. Currently, all of the Company's equity investments in tax credit programs are in LIHTC programs already accounted for using the proportional amortization method. Accounting Pronouncements Not Yet Adopted ASU No. 2023-07— Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. This ASU augments reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. In addition, the amendments enhance interim disclosure requirements, clarify circumstances in which an entity can disclose multiple segment measures of profit or loss, provide new segment disclosure requirements for entities with a single reportable segment, and contain other disclosure requirements. This ASU is effective for the Company for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. This ASU will have no impact on the Company's consolidated financial position, results of operations, and cash flows. Adoption may lead to additional and revised disclosures in the Company's financial statements starting with the 2024 Annual Report on Form 10-K.

Earnings Per Common Share

Earnings Per Common Share	3 Months Ended
	Mar. 31, 2024
Earnings Per Share [Abstract]
Earnings Per Common Share	Note 2 Earnings Per Common Share The computation of basic and diluted earnings per common share is presented below for the periods indicated (in thousands, except share and per share data): Three Months Ended March 31, c 2024 2023 Basic earnings per common share: Numerator: Net income $ 47,980 $ 52,882 Distributed and undistributed earnings allocated to participating securities (680) (798) Income allocated to common stockholders for basic earnings per common share $ 47,300 $ 52,084 Denominator: Weighted average common shares outstanding 74,509,107 74,755,002 Less average unvested stock awards (1,127,838) (1,193,881) Weighted average shares for basic earnings per common share 73,381,269 73,561,121 Basic earnings per common share $ 0.64 $ 0.71 Diluted earnings per common share: Numerator: Income allocated to common stockholders for basic earnings per common share $ 47,300 $ 52,084 Adjustment for earnings reallocated from participating securities 1 3 Income used in calculating diluted earnings per common share $ 47,301 $ 52,087 Denominator: Weighted average shares for basic earnings per common share 73,381,269 73,561,121 Dilutive effect of certain share-based awards 255,824 447,581 Weighted average shares for diluted earnings per common share 73,637,093 74,008,702 Diluted earnings per common share $ 0.64 $ 0.70 Potentially dilutive unvested shares totaling 1,142,702 and 1,190,511 were outstanding at March 31, 2024 and 2023, respectively, but excluded from the calculation of diluted earnings per common share because their inclusion would have been anti-dilutive.

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Note 3 Investment Securities Investment securities include investment securities available for sale, marketable equity securities, and investment securities held to maturity. The investment securities portfolio consisted of the following at the dates indicated (in thousands): March 31, 2024 Amortized Cost Gross Unrealized Carrying Value (1) Gains Losses Investment securities available for sale: U.S. Treasury securities $ 139,868 $ 176 $ (9,754) $ 130,290 U.S. Government agency and sponsored enterprise residential MBS 2,193,543 2,549 (34,800) 2,161,292 U.S. Government agency and sponsored enterprise commercial MBS 559,069 116 (64,978) 494,207 Private label residential MBS and CMOs 2,543,764 361 (293,906) 2,250,219 Private label commercial MBS 2,191,733 1,029 (70,491) 2,122,271 Single family real estate-backed securities 356,205 — (14,843) 341,362 Collateralized loan obligations 1,077,232 1,653 (2,393) 1,076,492 Non-mortgage asset-backed securities 103,594 164 (3,634) 100,124 State and municipal obligations 113,280 315 (6,882) 106,713 SBA securities 101,515 41 (3,091) 98,465 9,379,803 $ 6,404 $ (504,772) 8,881,435 Investment securities held to maturity 10,000 10,000 $ 9,389,803 8,891,435 Marketable equity securities 33,524 $ 8,924,959 December 31, 2023 Amortized Cost Gross Unrealized Carrying Value (1) Gains Losses Investment securities available for sale: U.S. Treasury securities $ 139,858 $ 532 $ (9,798) $ 130,592 U.S. Government agency and sponsored enterprise residential MBS 1,962,658 1,810 (40,261) 1,924,207 U.S. Government agency and sponsored enterprise commercial MBS 561,557 107 (63,805) 497,859 Private label residential MBS and CMOs 2,596,231 268 (300,769) 2,295,730 Private label commercial MBS 2,282,833 678 (84,768) 2,198,743 Single family real estate-backed securities 383,984 — (17,729) 366,255 Collateralized loan obligations 1,122,799 735 (10,710) 1,112,824 Non-mortgage asset-backed securities 106,095 156 (3,471) 102,780 State and municipal obligations 107,176 715 (5,273) 102,618 SBA securities 106,237 41 (3,254) 103,024 9,369,428 $ 5,042 $ (539,838) 8,834,632 Investment securities held to maturity 10,000 10,000 $ 9,379,428 8,844,632 Marketable equity securities 32,722 $ 8,877,354 (1) At fair value except for securities held to maturity. Investment securities held to maturity at March 31, 2024 and December 31, 2023, consisted of one State of Israel bond maturing in October 2024. Accrued interest receivable on investments totaled $38 million and $37 million at March 31, 2024 and December 31, 2023, respectively, and is included in other assets in the accompanying consolidated balance sheets. At March 31, 2024, contractual maturities of investment securities available for sale, adjusted for anticipated prepayments when applicable, were as follows (in thousands): Amortized Cost Fair Value Due in one year or less $ 964,667 $ 933,002 Due after one year through five years 5,211,147 5,061,309 Due after five years through ten years 1,952,118 1,774,119 Due after ten years 1,251,871 1,113,005 $ 9,379,803 $ 8,881,435 The carrying value of securities pledged as collateral for FHLB advances, public deposits, interest rate swaps and to secure borrowing capacity at the FRB totaled $7.7 billion at both March 31, 2024 and December 31, 2023, respectively. The following table provides information about gains (losses) on investment securities for the periods indicated (in thousands): Three Months Ended March 31, 2024 2023 Gross realized gains on investment securities AFS $ 27 $ 772 Gross realized losses on investment securities AFS (55) (20) Net realized gain (loss) (28) 752 Net gain (loss) on marketable equity securities recognized in earnings 803 (13,301) Gain (loss) on investment securities, net $ 775 $ (12,549) The following tables present the aggregate fair value and the aggregate amount by which amortized cost exceeded fair value for investment securities available for sale in unrealized loss positions aggregated by investment category and length of time that individual securities had been in continuous unrealized loss positions at the dates indicated (in thousands): March 31, 2024 Less than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses U.S. Treasury securities $ 9,921 $ (54) $ 99,859 $ (9,700) $ 109,780 $ (9,754) U.S. Government agency and sponsored enterprise residential MBS 149,058 (370) 1,515,872 (34,430) 1,664,930 (34,800) U.S. Government agency and sponsored enterprise commercial MBS 15,969 (84) 465,373 (64,894) 481,342 (64,978) Private label residential MBS and CMOs 6,393 (26) 2,219,341 (293,880) 2,225,734 (293,906) Private label commercial MBS 15,825 (42) 1,985,746 (70,449) 2,001,571 (70,491) Single family real estate-backed securities — — 341,362 (14,843) 341,362 (14,843) Collateralized loan obligations — — 679,257 (2,393) 679,257 (2,393) Non-mortgage asset-backed securities — — 77,192 (3,634) 77,192 (3,634) State and municipal obligations 6,309 (65) 55,353 (6,817) 61,662 (6,882) SBA securities 7,777 (35) 85,680 (3,056) 93,457 (3,091) $ 211,252 $ (676) $ 7,525,035 $ (504,096) $ 7,736,287 $ (504,772) December 31, 2023 Less than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses U.S. Treasury securities $ 9,941 $ (27) $ 99,769 $ (9,771) $ 109,710 $ (9,798) U.S. Government agency and sponsored enterprise residential MBS 82,382 (430) 1,646,081 (39,831) 1,728,463 (40,261) U.S. Government agency and sponsored enterprise commercial MBS 3,332 (6) 481,651 (63,799) 484,983 (63,805) Private label residential MBS and CMOs — — 2,255,461 (300,769) 2,255,461 (300,769) Private label commercial MBS 51,434 (323) 2,054,378 (84,445) 2,105,812 (84,768) Single family real estate-backed securities — — 366,255 (17,729) 366,255 (17,729) Collateralized loan obligations 184,652 (348) 880,609 (10,362) 1,065,261 (10,710) Non-mortgage asset-backed securities — — 79,697 (3,471) 79,697 (3,471) State and municipal obligations 24,765 (1,049) 32,380 (4,224) 57,145 (5,273) SBA securities 8,194 (46) 89,763 (3,208) 97,957 (3,254) $ 364,700 $ (2,229) $ 7,986,044 $ (537,609) $ 8,350,744 $ (539,838) The Company monitors its investment securities available for sale for credit loss impairment on an individual security basis. No securities were determined to be credit loss impaired during the three months ended March 31, 2024 and 2023. At March 31, 2024, the Company did not have an intent to sell securities that were in significant unrealized loss positions, and it was not more likely than not that the Company would be required to sell these securities before recovery of the amortized cost basis, which may be at maturity. In making this determination, the Company considered its current and projected liquidity position including its ability to pledge securities to generate liquidity, its investment policy as to permissible holdings and concentration limits, regulatory requirements and other relevant factors. We have not sold, and do not anticipate the need to sell, securities in unrealized loss positions to generate liquidity. At March 31, 2024, 540 securities available for sale were in unrealized loss positions. The amount of impairment related to 138 of these securities was considered insignificant both individually and in the aggregate, totaling approximately $1.3 million and no further analysis with respect to these securities was considered necessary. The basis for concluding that AFS securities were not credit loss impaired and no ACL was considered necessary at March 31, 2024, is further discussed below. Unrealized losses were primarily attributable to a sustained higher interest rate environment. In some cases, wider spreads compared to levels at which securities were purchased. market volatility and yield curve dislocations also contributed to unrealized losses. The investment securities AFS portfolio was in a net unrealized loss position of $498.4 million at March 31, 2024, compared to $534.8 million at December 31, 2023, improving by $36.4 million during the three months ended March 31, 2024. While the majority of securities in the portfolio were floating rate at March 31, 2024, fixed rate securities accounted for the majority of unrealized losses. U.S. Government, U.S. Government Agency and Government Sponsored Enterprise Securities At March 31, 2024, six U.S. treasury, 104 U.S. Government agency and sponsored enterprise residential MBS, 27 U.S. Government agency and sponsored enterprise commercial MBS, and 22 SBA securities were in unrealized loss positions. The timely payment of principal and interest on these securities is explicitly or implicitly guaranteed by the U.S. Government. As such, there is an assumption of zero credit loss and the Company expects to recover the amortized cost basis of these securities. Private Label Securities: None of the impaired private label securities had missed principal or interest payments or had been downgraded by a NRSRO at March 31, 2024. The Company performed an analysis comparing the present value of cash flows expected to be collected to the amortized cost basis of impaired securities. This analysis was based on a scenario that we believe to be generally more conservative than our reasonable and supportable economic forecast at March 31, 2024, and incorporated assumptions about voluntary prepayment rates, collateral defaults, delinquencies, severity and other relevant factors as described further below. Our analysis also considered the structural characteristics of each security and the level of credit enhancement provided by that structure. Private label residential MBS and CMOs At March 31, 2024, 115 private label residential MBS and CMOs were in unrealized loss positions. Our analysis of cash flows expected to be collected on these securities incorporated assumptions about collateral default rates, voluntary prepayment rates, loss severity, delinquencies and recovery lag. In developing those assumptions, we took into account collateral quality measures such as FICO, LTV, documentation, loan type, property type, agency availability criteria and performing status. We also regularly monitor sector data including home price appreciation, forbearance, delinquency, special servicing and prepay trends as well as other economic data that could be indicative of stress in the sector. Underlying delinquencies in this sector remain low. Our March 31, 2024 analysis projected weighted average collateral losses for impaired securities in this category of 2% compared to weighted average credit support of 18%. As of March 31, 2024, 95% of impaired securities in this category, based on carrying value, were externally rated AAA, 4% were rated AA and 1% were rated A. Private label commercial MBS At March 31, 2024, 88 private label commercial MBS were in unrealized loss positions. Our analysis of cash flows expected to be collected on these securities incorporated assumptions about collateral default rates, voluntary prepayment rates, loss severity, delinquencies and recovery lag. In developing those assumptions, we took into account collateral quality and type, loan size, loan purpose and other qualitative factors. We also regularly monitor collateral concentrations, collateral watch lists, bankruptcy data, defeasance data, special servicing trends, delinquency and other economic data that could be indicative of stress in the sector. We consider collateral, deal, sector and tranche level performance as well as maturity and refinance risk. While we have observed some deterioration in collateral performance in this segment, particularly in the office, retail and hospitality sectors, the high credit quality of these securities and adequacy of subordination to cover projected collateral losses supports the conclusion that there is no credit loss impairment. Our March 31, 2024 analysis projected weighted average collateral losses for impaired securities in this category of 6% compared to weighted average credit support of 43%. As of March 31, 2024, 84% of impaired securities in this category, based on carrying value, were externally rated AAA, 12% were rated AA and 4% were rated A. Single family real estate-backed securities At March 31, 2024, 11 single family rental real estate-backed securities were in unrealized loss positions. Our analysis of cash flows expected to be collected on these securities incorporated assumptions about collateral default rates, loss severity, delinquencies and recovery lag. We regularly monitor sector data including home price appreciation, forbearance, delinquency and prepay trends as well as other economic data that could be indicative of stress in the sector. We consider collateral, deal, sector and tranche level performance as well as maturity and refinance risk. Our March 31, 2024 analysis projected weighted average collateral losses for this category of 7% compared to weighted average credit support of 55%. As of March 31, 2024, 54% of impaired securities in this category, based on carrying value, were externally rated AAA, 18% were rated AA and one security was not externally rated. Collateralized loan obligations At March 31, 2024, 15 collateralized loan obligations were in unrealized loss positions. Unrealized losses totaled less than 1% of total amortized cost of this segment at March 31, 2024. Our analysis of cash flows expected to be collected on these securities incorporated assumptions about collateral default rates, loss severity, and delinquencies, calibrated to take into account idiosyncratic risks associated with the underlying collateral. In developing those assumptions, we took into account each sector’s performance pre-, during and post the 2008 financial crisis. We regularly engage with bond managers to monitor trends in underlying collateral including potential downgrades and subsequent cash flow diversions, liquidity, ratings migration, and any other relevant developments. While we have observed some deterioration in underlying collateral performance due in large part to rising costs, the high credit quality of these securities and adequacy of subordination to cover projected collateral losses supports the conclusion that there is no credit loss impairment. Our March 31, 2024 analysis projected weighted average collateral losses for impaired securities in this category of 11% compared to weighted average credit support of 42%. As of March 31, 2024, 80% of the impaired securities in this category, based on carrying value, were externally rated AAA, 12% were rated AA and 8% were rated A. Non-mortgage asset-backed securities At March 31, 2024, six non-mortgage asset-backed securities were in unrealized loss positions. These securities are backed by student loan collateral. Our analysis of cash flows expected to be collected on these securities incorporated assumptions about collateral default rates, loss severity, delinquencies, voluntary prepayment rates and recovery lag. In developing assumptions, we took into account collateral type, delineated by whether collateral consisted of loans to borrowers in school, refinancing, or a mixture. Our March 31, 2024 analysis projected weighted average collateral losses for impaired securities in this category of 4% compared to weighted average credit support of 26%. As of March 31, 2024, 36% of the impaired securities in this category, based on carrying value, were externally rated AAA, and 64% were rated AA. State and Municipal Obligations At March 31, 2024, eight state and municipal obligations were in unrealized loss positions. Our analysis of potential credit loss impairment for these securities incorporates a quantitative measure of the underlying obligor's credit worthiness provided by a third-party vendor as well as other relevant qualitative considerations. As of March 31, 2024, 87% of the impaired securities in this category, based on carrying value, were externally rated AAA and 13% were rated AA.

Loans and Allowance for Credit

Loans and Allowance for Credit Losses	3 Months Ended
	Mar. 31, 2024
Receivables [Abstract]
Loans and Allowance for Credit Losses	Note 4 Loans and Allowance for Credit Losses Loans consisted of the following at the dates indicated (dollars in thousands): March 31, 2024 December 31, 2023 Total Percent of Total Total Percent of Total Commercial: Non-owner occupied commercial real estate $ 5,309,126 21.9 % $ 5,323,241 21.6 % Construction and land 529,645 2.2 % 495,992 2.0 % Owner occupied commercial real estate 1,916,651 7.9 % 1,935,743 7.9 % Commercial and industrial 6,745,622 27.9 % 6,971,981 28.3 % Pinnacle - municipal finance 864,796 3.6 % 884,690 3.6 % Franchise and equipment finance 347,103 1.4 % 380,347 1.5 % Mortgage warehouse lending 456,385 1.9 % 432,663 1.8 % 16,169,328 66.8 % 16,424,657 66.7 % Residential: 1-4 single family residential 6,814,865 28.1 % 6,903,013 28.0 % Government insured residential 1,242,107 5.1 % 1,306,014 5.3 % 8,056,972 33.2 % 8,209,027 33.3 % Total loans 24,226,300 100.0 % 24,633,684 100.0 % Allowance for credit losses (217,556) (202,689) Loans, net $ 24,008,744 $ 24,430,995 Premiums, discounts and deferred fees and costs, excluding the non-credit related discount on PCD loans, totaled $41 million and $45 million at March 31, 2024 and December 31, 2023, respectively. The following table presents the amortized cost basis of residential PCD loans and the related amount of non-credit discount, net of the related ACL, at the dates indicated (in thousands): March 31, 2024 December 31, 2023 UPB $ 76,342 $ 80,123 Non-credit discount (33,171) (35,249) Total amortized cost of PCD loans 43,171 44,874 ACL related to PCD loans (134) (161) PCD loans, net $ 43,037 $ 44,713 Included in loans, net are direct or sales type finance leases totaling $583 million and $602 million at March 31, 2024 and December 31, 2023, respectively. The amount of income recognized from direct or sales type finance leases for the three months ended March 31, 2024 and 2023 totaled $4.0 million and $4.3 million, respectively, and is included in interest income on loans in the consolidated statements of income. During the three months ended March 31, 2024 and 2023, the Company purchased residential loans totaling $67 million and $187 million, respectively. At March 31, 2024 and December 31, 2023, the Company had pledged loans with a carrying value of approximately $16.2 billion and $16.5 billion, respectively, as security for FHLB advances and Federal Reserve discount window capacity. Accrued interest receivable on loans totaled $138 million at both March 31, 2024 and December 31, 2023, and is included in other assets in the accompanying consolidated balance sheets. The amount of interest income reversed on non-accrual loans was not material for the three months ended March 31, 2024 and 2023. Allowance for credit losses Activity in the ACL is summarized below for the periods indicated (in thousands): Three Months Ended March 31, 2024 2023 Commercial Residential Total Commercial Residential Total Beginning balance $ 195,058 $ 7,631 $ 202,689 $ 136,205 $ 11,741 $ 147,946 Impact of adoption of ASU 2022-02 N/A N/A N/A (1,677) (117) (1,794) Balance after adoption of ASU 2022-02 195,058 7,631 202,689 134,528 11,624 146,152 Provision (recovery) 16,779 (974) 15,805 17,425 170 17,595 Charge-offs (5,352) (34) (5,386) (7,899) — (7,899) Recoveries 4,444 4 4,448 2,941 3 2,944 Ending balance $ 210,929 $ 6,627 $ 217,556 $ 146,995 $ 11,797 $ 158,792 The ACL was determined utilizing a 2-year reasonable and supportable forecast period. The quantitative portion of the ACL was determined using three weighted third-party provided economic scenarios. The ACL increased by $14.9 million, from 0.82% to 0.90% of total loans, at March 31, 2024, compared to December 31, 2023. The more significant factors impacting the provision for credit losses and increase in the ACL for the three months ended March 31, 2024, were an increase in qualitative loss factors and risk rating migration, partially offset by an improved economic forecast. The following table presents gross charge-offs during the three months ended March 31, 2024, by year of origination (in thousands): 2024 2023 2022 2021 2020 Prior to 2020 Revolving Loans Total CRE $ — $ — $ — $ — $ — $ 486 $ — $ 486 C&I — 191 3,186 29 — 591 79 4,076 Franchise and equipment finance — — — — — 790 — 790 Residential — — — — — 34 — 34 $ — $ 191 $ 3,186 $ 29 $ — $ 1,901 $ 79 $ 5,386 The following table presents the components of the provision for credit losses for the periods indicated (in thousands): Three Months Ended March 31, 2024 2023 Amount related to funded portion of loans $ 15,805 $ 17,595 Amount related to off-balance sheet credit exposures (520) 2,193 Total provision for credit losses $ 15,285 $ 19,788 Credit quality indicators for residential loans Management considers delinquency status to be the most meaningful indicator of the credit quality of residential loans, other than government insured residential loans. Delinquency status is updated at least monthly. LTV and FICO scores are also important indicators of credit quality for 1-4 single family residential loans other than government insured loans. FICO scores are generally updated semi-annually, and were most recently updated in the first quarter of 2024. LTVs are typically at origination since we do not routinely update residential appraisals. Substantially all of the government insured residential loans are government insured buyout loans, which the Company buys out of GNMA securitizations upon default. For these loans, traditional measures of credit quality are not particularly relevant considering the guaranteed nature of the loans and the underlying business model. Factors that impact risk inherent in the residential portfolio segment include national and regional economic conditions such as levels of unemployment, wages and interest rates, as well as residential property values. 1-4 Single Family Residential credit exposure, excluding government insured residential loans, based on delinquency status (in thousands): March 31, 2024 Amortized Cost By Origination Year 2024 2023 2022 2021 2020 Prior Total Current $ 45,089 $ 363,306 $ 1,093,852 $ 2,923,477 $ 839,473 $ 1,495,593 $ 6,760,790 30 - 59 Days Past Due — 2,033 5,986 5,444 5,651 17,067 36,181 60 - 89 Days Past Due — — 1,058 — — 221 1,279 90 Days or More Past Due — — 4,505 897 — 11,213 16,615 $ 45,089 $ 365,339 $ 1,105,401 $ 2,929,818 $ 845,124 $ 1,524,094 $ 6,814,865 December 31, 2023 Amortized Cost By Origination Year 2023 2022 2021 2020 2019 Prior Total Current $ 363,123 $ 1,117,039 $ 2,965,840 $ 854,376 $ 296,146 $ 1,255,688 $ 6,852,212 30 - 59 Days Past Due 2,200 1,785 7,201 5,745 — 14,527 31,458 60 - 89 Days Past Due — 2,116 1,465 — 143 2,728 6,452 90 Days or More Past Due — 5,872 — — 1,439 5,580 12,891 $ 365,323 $ 1,126,812 $ 2,974,506 $ 860,121 $ 297,728 $ 1,278,523 $ 6,903,013 1-4 Single Family Residential credit exposure, excluding government insured residential loans, based on LTV (in thousands): March 31, 2024 Amortized Cost By Origination Year LTV 2024 2023 2022 2021 2020 Prior Total Less than 61% $ 3,734 $ 63,498 $ 256,645 $ 1,190,472 $ 321,803 $ 484,128 $ 2,320,280 61% - 70% 8,295 67,262 276,274 804,309 216,282 351,977 1,724,399 71% - 80% 32,772 234,579 570,411 900,665 306,968 646,898 2,692,293 More than 80% 288 — 2,071 34,372 71 41,091 77,893 $ 45,089 $ 365,339 $ 1,105,401 $ 2,929,818 $ 845,124 $ 1,524,094 $ 6,814,865 December 31, 2023 Amortized Cost By Origination Year LTV 2023 2022 2021 2020 2019 Prior Total Less than 61% $ 63,117 $ 260,403 $ 1,211,101 $ 326,771 $ 72,219 $ 428,451 $ 2,362,062 61% - 70% 67,146 280,602 813,682 221,091 71,652 293,784 1,747,957 71% - 80% 235,060 583,724 915,166 312,188 148,483 519,699 2,714,320 More than 80% — 2,083 34,557 71 5,374 36,589 78,674 $ 365,323 $ 1,126,812 $ 2,974,506 $ 860,121 $ 297,728 $ 1,278,523 $ 6,903,013 1-4 Single Family Residential credit exposure, excluding government insured residential loans, based on FICO score (in thousands): March 31, 2024 Amortized Cost By Origination Year FICO 2024 2023 2022 2021 2020 Prior Total 760 or greater $ 32,918 $ 262,572 $ 799,670 $ 2,340,757 $ 671,972 $ 1,071,738 $ 5,179,627 720 - 759 9,389 70,612 188,024 375,750 105,189 207,386 956,350 719 or less or not available 2,782 32,155 117,707 213,311 67,963 244,970 678,888 $ 45,089 $ 365,339 $ 1,105,401 $ 2,929,818 $ 845,124 $ 1,524,094 $ 6,814,865 December 31, 2023 Amortized Cost By Origination Year FICO 2023 2022 2021 2020 2019 Prior Total 760 or greater $ 253,774 $ 810,150 $ 2,378,572 $ 696,363 $ 203,966 $ 893,290 $ 5,236,115 720 - 759 78,882 194,135 392,179 99,412 50,984 210,663 1,026,255 719 or less or not available 32,667 122,527 203,755 64,346 42,778 174,570 640,643 $ 365,323 $ 1,126,812 $ 2,974,506 $ 860,121 $ 297,728 $ 1,278,523 $ 6,903,013 Past Due and Non-Accrual Loans: The following table presents an aging of loans at the dates indicated (in thousands): March 31, 2024 December 31, 2023 Current 30 - 59 60 - 89 90 Days or Total Current 30 - 59 60 - 89 90 Days or Total CRE $ 5,827,723 $ 2,332 $ — $ 8,716 $ 5,838,771 $ 5,779,309 $ 27,918 $ 1,947 $ 10,059 $ 5,819,233 C&I 8,603,178 13,084 160 45,851 8,662,273 8,851,585 16,228 5,536 34,375 8,907,724 Pinnacle - municipal finance 864,796 — — — 864,796 884,690 — — — 884,690 Franchise and equipment finance 345,090 1,593 — 420 347,103 380,347 — — — 380,347 Mortgage warehouse lending 456,385 — — — 456,385 432,663 — — — 432,663 1-4 single family residential 6,760,790 36,181 1,279 16,615 6,814,865 6,852,212 31,458 6,452 12,891 6,903,013 Government insured residential 805,859 127,661 53,216 255,371 1,242,107 835,282 131,652 61,942 277,138 1,306,014 $ 23,663,821 $ 180,851 $ 54,655 $ 326,973 $ 24,226,300 $ 24,016,088 $ 207,256 $ 75,877 $ 334,463 $ 24,633,684 Included in the table above is the guaranteed portion of SBA loans past due by 90 days or more totaling $37.8 million ($29.5 million of C&I and $8.3 million of CRE) and $39.7 million at March 31, 2024 and December 31, 2023, respectively. Loans contractually delinquent by 90 days or more and still accruing totaled $256 million and $278 million at March 31, 2024 and December 31, 2023, respectively, substantially all of which were government insured residential loans. These loans are government insured pool buyout loans, which the Company buys out of GNMA securitizations upon default. The following table presents information about loans on non-accrual status at the dates indicated (in thousands): March 31, 2024 December 31, 2023 Amortized Cost Amortized Cost With No Related Allowance Amortized Cost Amortized Cost With No Related Allowance CRE $ 12,258 $ 1,891 $ 13,727 $ 1,947 C&I 62,445 9,303 68,533 14,078 Franchise and equipment finance 22,630 7,305 23,678 7,796 1-4 single family residential 17,847 — 20,513 — $ 115,180 $ 18,499 $ 126,451 $ 23,821 Included in the table above is the guaranteed portion of non-accrual SBA loans totaling $40.0 million and $41.8 million at March 31, 2024 and December 31, 2023, respectively. The amount of interest income recognized on non-accrual loans was insignificant for the three months ended March 31, 2024 and 2023. The amount of additional interest income that would have been recognized on non-accrual loans had they performed in accordance with their contractual terms was approximately $2.5 million and $1.9 million for the three months ended March 31, 2024 and 2023, respectively. Collateral dependent loans: The following table presents the amortized cost basis of collateral dependent loans at the dates indicated (in thousands): March 31, 2024 December 31, 2023 Amortized Cost Extent to Which Secured by Collateral Amortized Cost Extent to Which Secured by Collateral CRE $ 10,995 $ 10,995 $ 11,574 $ 11,574 C&I 45,379 34,711 36,401 25,821 Franchise and equipment finance 22,210 18,330 23,488 18,678 $ 78,584 $ 64,036 $ 71,463 $ 56,073 Collateral for the CRE loan class generally consists of commercial real estate, or for certain construction loans, residential real estate. Collateral for C&I loans generally consists of equipment, accounts receivable, inventory and other business assets and for owner-occupied commercial real estate loans, may also include commercial real estate. Franchise and equipment finance loans may be collateralized by franchise value or by equipment. Residential loans are collateralized by residential real estate. There were no significant changes to the extent to which collateral secured collateral dependent loans during the three months ended March 31, 2024. Foreclosure of residential real estate The recorded investment in residential loans in the process of foreclosure was $238 million, of which $225 million was government insured at March 31, 2024, and $262 million, of which $250 million was government insured at December 31, 2023. The carrying amount of foreclosed residential real estate included in other assets in the accompanying consolidated balance sheet was insignificant at March 31, 2024 and December 31, 2023. Loan Modifications The following tables summarize loans that were modified for borrowers experiencing financial difficulty, by type of modification, during the periods indicated (dollars in thousands): Three Months Ended March 31, 2024 Interest Rate Reduction Term Extension Combination - Interest Rate Reduction and Term Extension Total % (1) Total % (1) Total % (1) Total CRE $ — — % $ 8,486 — % $ — — % $ 8,486 C&I — — % 1,743 — % 29 — % 1,772 Government insured residential — — % 14,422 1 % 2,623 — % 17,045 $ — $ 24,651 $ 2,652 $ 27,303 Three Months Ended March 31, 2023 Interest Rate Reduction Term Extension Combination - Interest Rate Reduction and Term Extension Total % (1) Total % (1) Total % (1) Total C&I $ — — % $ 4,918 — % $ — — % $ 4,918 1-4 single family residential 766 — % — — % — — % 766 Government insured residential 109 — % 36,920 2 % 2,312 — % 39,341 $ 875 $ 41,838 $ 2,312 $ 45,025 (1) Represents percentage of loans receivable in each category. The following tables summarize the financial effect of the modifications made to borrowers experiencing difficulty, during the periods indicated: Three Months Ended March 31, 2024 Financial Effect Term Extension: CRE Added a weighted average 0.2 years to the term of the modified loans. C&I Added a weighted average 0.3 years to the term of the modified loans. Government insured residential Added a weighted average 11.2 years to the term of the modified loans. Combination - Interest Rate Reduction and Term Extension: C&I Reduced weighted average contractual interest rate from 21.2% to 5.0% and added a weighted average 2.2 years to the term of the modified loans. Government insured residential Reduced weighted average contractual interest rate from 6.8% to 6.4% and added a weighted average 3.7 years to the term of the modified loans. Three Months Ended March 31, 2023 Financial Effect Interest Rate Reduction: 1-4 single family residential Reduced weighted average contractual interest rate from 3.8% to 3.1%. Government insured residential Reduced weighted average contractual interest rate from 4.8% to 3.8%. Term Extension: C&I Added a weighted average 0.7 years to the term of the modified loans. Government insured residential Added a weighted average 9.6 years to the term of the modified loans. Combination - Interest Rate Reduction and Term Extension: Government insured residential Reduced weighted average contractual interest rate from 5.8% to 4.9% and added a weighted average 6.9 years to the term of the modified loans. The following tables present the aging at March 31, 2024, of loans that were modified within the previous 12 months, and at March 31, 2023, of loans that were modified since January 1, 2023, the date of adoption of ASU 2022-02 (in thousands): March 31, 2024 Current 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due Total CRE $ 8,486 $ — $ — $ — $ 8,486 C&I 3,953 — — — 3,953 Franchise and equipment finance 10,425 — — — 10,425 1-4 single family residential 74 — — — 74 Government insured residential 17,123 9,001 4,439 20,974 51,537 $ 40,061 $ 9,001 $ 4,439 $ 20,974 $ 74,475 March 31, 2023 Current 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due Total C&I $ 4,918 $ — $ — $ — $ 4,918 1-4 single family residential 766 — — — 766 Government insured residential 22,346 11,083 4,683 1,229 39,341 $ 28,030 $ 11,083 $ 4,683 $ 1,229 $ 45,025 The following tables summarize loans that were modified within the previous 12 months and defaulted during the periods indicated (in thousands): Three Months Ended March 31, 2024 Interest Rate Reduction Term Extension Combination - Interest Rate Reduction and Term Extension Total Government insured residential $ — $ 10,262 $ — $ 10,262 Three Months Ended March 31, 2023 Interest Rate Reduction Term Extension Combination - Interest Rate Reduction and Term Extension Total Government insured residential $ 109 $ 5,070 $ 733 $ 5,912

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2024
Income Tax Disclosure [Abstract]
Income Taxes	Note 5 Income Taxes The Company’s effective income tax rate was 28.6% and 26.4% for the three months ended March 31, 2024 and 2023, respectively. The effective income tax rates differed from the statutory federal income tax rate of 21% for the three months ended March 31, 2024 and 2023 primarily due to the impact of state income taxes, partially offset by the benefit of income not subject to federal tax. The effective income tax rate for the three months ended March 31, 2024, also included the impact of a discrete item related to equity based compensation.

Derivatives and Hedging Activit

Derivatives and Hedging Activities	3 Months Ended
	Mar. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	Derivative Financial Instruments Derivatives designated as hedging instruments The Company has entered into interest rate derivatives designated as (i) cash flow hedges with the objective of limiting the variability of interest payment cash flows and (ii) fair value hedges designed to hedge changes in the fair value of outstanding fixed rate instruments caused by fluctuations in the benchmark interest rate. Changes in fair value of derivative instruments designated as cash flow hedges are reported in accumulated other comprehensive income. Changes in the fair value of derivative instruments designated as fair value hedges are recognized in earnings, as is the offsetting gain or loss on the hedged item. The following table summarizes the Company's derivatives designated as hedging instruments as of the dates indicated (in thousands): March 31, 2024 December 31, 2023 Notional Amount Fair Value (1) Notional Amount Fair Value (1) Asset Liability Asset Liability Derivatives designated as cash flow hedges: Interest rate swaps $ 2,855,000 $ — $ (3,051) $ 3,215,000 $ — $ (1,048) Interest rate caps purchased 200,000 9,647 — 200,000 10,157 — Interest rate collar 125,000 — (139) 125,000 84 — Derivatives designated as fair value hedges: Interest rate swaps 100,000 — — 100,000 — — $ 3,280,000 $ 9,647 $ (3,190) $ 3,640,000 $ 10,241 $ (1,048) (1) The fair values of derivatives are included in other assets or other liabilities in the consolidated balance sheets. Derivatives designated as cash flow hedges The following table provides information about the amount of gain (loss) related to derivatives designated as cash flow hedges reclassified from AOCI into interest income or expense for the periods indicated (in thousands): Three Months Ended March 31, 2024 2023 Location of gain (loss) reclassified from AOCI into income: Interest expense on borrowings $ 15,712 $ 7,497 Interest expense on deposits 4,926 5,049 Interest income on loans (816) (392) $ 19,822 $ 12,154 During the three months ended March 31, 2024 and 2023, no derivative positions designated as cash flow hedges were discontinued and none of the gains and losses reported in AOCI were reclassified into earnings as a result of the discontinuance of cash flow hedges or because of the early extinguishment of debt. As of March 31, 2024, the amount of net gain expected to be reclassified from AOCI into earnings during the next twelve months was $39.4 million, based on the forward curve. See Note 7 to the consolidated financial statements for additional information about the reclassification adjustments from AOCI into earnings. Derivatives designated as fair value hedges The amount of gain (loss) related to derivatives designated as fair value hedges recognized in earnings was insignificant for all applicable periods. The following table provides information about the hedged items related to derivatives designated as fair value hedges at the date indicated (in thousands): March 31, 2024 December 31, 2023 Location in Consolidated Balance Sheets Contractual balance outstanding of hedged item (1) $ 100,000 $ 100,000 Loans Cumulative fair value hedging adjustments $ (1,022) $ (1,656) Loans (1) This amount is included in the amortized cost basis of a closed portfolio of loans used to designate hedging relationships in a portfolio layer method hedge in which the hedged item is anticipated to be outstanding for the designated hedge period. The amortized cost basis of the closed portfolio used in this hedging relationship was $976 million and $992 million, respectively, at March 31, 2024 and December 31, 2023. Derivatives not designated as hedging instruments The Company enters into interest rate derivative contracts with certain of its commercial borrowers to enable those borrowers to manage their exposure to interest rate fluctuations. To mitigate interest rate risk associated with these derivative contracts, the Company enters into offsetting derivative contract positions with primary dealers. The Company also purchases and sells credit protection under RPAs with the objective of sharing with financial institution counterparties some of the credit exposure related to interest rate derivative contracts entered into with commercial borrowers related to participations purchased or sold. The Company will make or receive payments under these agreements if a customer defaults on an obligation to perform under certain interest rate derivative contracts. These interest rate derivative contracts are not designated as hedging instruments; therefore, changes in the fair value of these derivatives are recognized immediately in earnings. The impact on earnings related to changes in fair value of these derivatives was not material for the three months ended March 31, 2024 and 2023. The Company may be exposed to credit risk in the event of non-performance by the counterparties to its interest rate derivative agreements. The Company assesses the credit risk of its financial institution counterparties by monitoring publicly available credit rating and financial information. The Company manages dealer credit risk by entering into interest rate derivatives only with primary and highly rated counterparties, the use of ISDA master agreements, central clearing mechanisms and counterparty limits. The agreements contain bilateral collateral arrangements with the amount of collateral to be posted generally governed by the settlement value of outstanding swaps. The Company manages the risk of default by its commercial borrower counterparties through its normal loan underwriting and credit monitoring policies and procedures. The Company does not currently anticipate any significant losses from failure of interest rate derivative counterparties to honor their obligations. The following table summarizes the Company's derivatives not designated as hedging instruments as of the dates indicated (in thousands): March 31, 2024 December 31, 2023 Notional Amount Fair Value (1) Notional Amount Fair Value (1) Asset Liability Asset Liability Pay-fixed interest rate swaps $ 2,227,542 $ 93,495 $ (6,958) $ 2,166,813 $ 76,793 $ (16,702) Pay-variable interest rate swaps 2,227,542 6,958 (93,495) 2,166,813 16,702 (77,257) Interest rate caps purchased 65,610 2,110 — 65,610 1,922 — Interest rate caps sold 65,610 — (2,110) 65,610 — (1,922) RPAs purchased 78,838 24 — 77,846 20 — RPAs sold 335,868 — (292) 284,910 — (237) $ 5,001,010 $ 102,587 $ (102,855) $ 4,827,602 $ 95,437 $ (96,118) (1) Fair values of these derivatives are included in other assets and other liabilities in the consolidated balance sheets. Some of the Company’s ISDA master agreements with financial institution counterparties contain provisions that permit either counterparty to terminate the agreements and require settlement in the event that regulatory capital ratios fall below certain designated thresholds, upon the initiation of other defined regulatory actions or upon suspension or withdrawal of the Bank’s credit rating. Currently, there are no circumstances that would trigger these provisions of the agreements. Master netting agreements The Company does not offset assets and liabilities under master netting agreements for financial reporting purposes. Information on interest rate swaps and caps subject to these agreements is as follows at the dates indicated (in thousands): March 31, 2024 Gross Amounts Offset in Balance Net Amounts Presented in Gross Amounts Not Offset in Gross Amounts Derivative Collateral Net Amount Derivative assets $ 105,252 $ — $ 105,252 $ (10,148) $ (94,946) $ 158 Derivative liabilities (10,148) — (10,148) 10,148 — — $ 95,104 $ — $ 95,104 $ — $ (94,946) $ 158 December 31, 2023 Gross Amounts Offset in Balance Net Amounts Presented in Gross Amounts Not Offset in Gross Amounts Derivative Collateral Net Amount Derivative assets $ 88,956 $ — $ 88,956 $ (15,154) $ (73,730) $ 72 Derivative liabilities (17,750) — (17,750) 15,154 2,596 — $ 71,206 $ — $ 71,206 $ — $ (71,134) $ 72 The difference between the amounts reported for interest rate swaps subject to master netting agreements and the total fair value of interest rate contract derivative financial instruments reported in the consolidated balance sheets is related to interest rate derivative contracts not subject to master netting agreements.

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2024
Equity [Abstract]
Stockholders' Equity	Note 7 Stockholders’ Equity Accumulated Other Comprehensive Income Changes in other comprehensive income are summarized as follows for the periods indicated (in thousands): Three Months Ended March 31, 2024 2023 Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax Unrealized gains (losses) on investment securities available for sale: Net unrealized holding gains arising during the period $ 36,400 $ (9,464) $ 26,936 $ 101,265 $ (26,329) $ 74,936 Amounts reclassified to (gain) loss on investment securities available for sale, net 28 (7) 21 (752) 196 (556) Net change in unrealized gains (losses) on investment securities available for sale 36,428 (9,471) 26,957 100,513 (26,133) 74,380 Unrealized gains (losses) on derivative instruments: Net unrealized holding gains (losses) arising during the period 28,654 (7,450) 21,204 (2,926) 761 (2,165) Amounts reclassified to interest expense on deposits (4,926) 1,281 (3,645) (5,049) 1,313 (3,736) Amounts reclassified to interest expense on borrowings (15,712) 4,085 (11,627) (7,497) 1,949 (5,548) Amounts reclassified to interest income on loans 816 (212) 604 392 (102) 290 Net change in unrealized gains (losses) on derivative instruments 8,832 (2,296) 6,536 (15,080) 3,921 (11,159) Other comprehensive income $ 45,260 $ (11,767) $ 33,493 $ 85,433 $ (22,212) $ 63,221 The categories of AOCI and changes therein are presented below for the periods indicated (in thousands): Unrealized Loss on Investment Securities Available for Sale Unrealized Gain on Derivative Instruments Total Balance at December 31, 2023 $ (395,746) $ 38,325 $ (357,421) Other comprehensive income 26,957 6,536 33,493 Balance at March 31, 2024 $ (368,789) $ 44,861 $ (323,928) Balance at December 31, 2022 $ (498,911) $ 61,006 $ (437,905) Other comprehensive income (loss) 74,380 (11,159) 63,221 Balance at March 31, 2023 $ (424,531) $ 49,847 $ (374,684)

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2024
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 8 Fair Value Measurements Assets and liabilities measured at fair value on a recurring basis The following is a description of the methodologies used to estimate the fair values of assets and liabilities measured at fair value on a recurring basis and the level within the fair value hierarchy in which those measurements are typically classified. Investment securities available for sale and marketable equity securities —Fair value measurements are based on quoted prices in active markets when available; these measurements are classified within level 1 of the fair value hierarchy. These securities typically include U.S. Treasury securities and certain preferred stocks. If quoted prices in active markets are not available, fair values are estimated using quoted prices of securities with similar characteristics, quoted prices of identical securities in less active markets, discounted cash flow techniques, or matrix pricing models. These securities are generally classified within level 2 of the fair value hierarchy and include U.S. Government agency securities, U.S. Government agency and sponsored enterprise MBS, preferred stock investments for which level 1 valuations are not available, non-mortgage asset-backed securities, single family real estate-backed securities, private label residential MBS and CMOs, private label commercial MBS, collateralized loan obligations and state and municipal obligations. Pricing of these securities is generally primarily spread driven. Observable inputs that may impact the valuation of these securities include benchmark yield curves, credit spreads, reported trades, dealer quotes, bids, issuer spreads, current rating, historical constant prepayment rates, historical voluntary prepayment rates, structural and waterfall features of individual securities, published collateral data, and for certain securities, historical constant default rates and default severities. The Company uses third-party pricing services in determining fair value measurements for investment securities. To obtain an understanding of the methodologies and assumptions used, management reviews written documentation provided by the pricing services, conducts interviews with valuation desk personnel and reviews model results and detailed assumptions used to value selected securities as considered necessary. Management has established a robust price challenge process that includes a review by the treasury front office of all prices provided on a quarterly basis. Any price evidencing unexpected quarter over quarter fluctuations or deviations from expectations is challenged. If considered necessary to resolve any discrepancies, a price will be obtained from an additional independent valuation source. The Company does not typically adjust the prices provided, other than through this established challenge process. The results of price challenges are subject to review by executive management. Any price discrepancies are resolved based on careful consideration of the assumptions and inputs employed by each of the pricing sources. Derivative financial instruments —Fair values of interest rate derivatives are determined using widely accepted discounted cash flow modeling techniques. These discounted cash flow models use projections of future cash payments and receipts that are discounted at mid-market rates. Observable inputs that may impact the valuation of these instruments include benchmark swap rates and benchmark forward yield curves. These fair value measurements are generally classified within level 2 of the fair value hierarchy. The following tables present assets and liabilities measured at fair value on a recurring basis at the dates indicated (in thousands): March 31, 2024 Level 1 Level 2 Total Investment securities available for sale: U.S. Treasury securities $ 130,290 $ — $ 130,290 U.S. Government agency and sponsored enterprise residential MBS — 2,161,292 2,161,292 U.S. Government agency and sponsored enterprise commercial MBS — 494,207 494,207 Private label residential MBS and CMOs — 2,250,219 2,250,219 Private label commercial MBS — 2,122,271 2,122,271 Single family real estate-backed securities — 341,362 341,362 Collateralized loan obligations — 1,076,492 1,076,492 Non-mortgage asset-backed securities — 100,124 100,124 State and municipal obligations — 106,713 106,713 SBA securities — 98,465 98,465 Marketable equity securities 33,524 — 33,524 Derivative assets — 112,234 112,234 Total assets at fair value $ 163,814 $ 8,863,379 $ 9,027,193 Derivative liabilities $ — $ (106,045) $ (106,045) Total liabilities at fair value $ — $ (106,045) $ (106,045) December 31, 2023 Level 1 Level 2 Total Investment securities available for sale: U.S. Treasury securities $ 130,592 $ — $ 130,592 U.S. Government agency and sponsored enterprise residential MBS — 1,924,207 1,924,207 U.S. Government agency and sponsored enterprise commercial MBS — 497,859 497,859 Private label residential MBS and CMOs — 2,295,730 2,295,730 Private label commercial MBS — 2,198,743 2,198,743 Single family real estate-backed securities — 366,255 366,255 Collateralized loan obligations — 1,112,824 1,112,824 Non-mortgage asset-backed securities — 102,780 102,780 State and municipal obligations — 102,618 102,618 SBA securities — 103,024 103,024 Marketable equity securities 32,722 — 32,722 Derivative assets — 105,678 105,678 Total assets at fair value $ 163,314 $ 8,809,718 $ 8,973,032 Derivative liabilities $ — $ (97,166) $ (97,166) Total liabilities at fair value $ — $ (97,166) $ (97,166) Assets and liabilities measured at fair value on a non-recurring basis Following is a description of the methodologies used to estimate the fair values of assets and liabilities that may be measured at fair value on a non-recurring basis, and the level within the fair value hierarchy in which those measurements are typically classified: Collateral dependent loans and OREO —The carrying amount of collateral dependent loans is typically based on the fair value of the underlying collateral, which may be real estate, enterprise value or other business assets, less estimated costs to sell when repayment is expected to come from the sale of the collateral. The carrying value of OREO is initially measured based on the fair value of the real estate acquired in foreclosure and subsequently adjusted to the lower of cost or estimated fair value, less estimated cost to sell. Fair values of real estate collateral and OREO are typically based on third-party real estate appraisals which utilize market and income approaches to valuation incorporating both observable and unobservable inputs. Fair value measurements related to collateral dependent loans and OREO are generally classified within level 3 of the fair value hierarchy. The following table presents the net carrying value of assets classified within level 3 of the fair value hierarchy at the dates indicated, for which non-recurring changes in fair value were recorded during the period then ended (in thousands): March 31, 2024 December 31, 2023 Collateral dependent loans $ 52,020 $ 50,885 OREO 1,260 29 $ 53,280 $ 50,914 The following table presents the carrying value and fair value of financial instruments and the level within the fair value hierarchy in which those measurements are classified at the dates indicated (dollars in thousands): March 31, 2024 December 31, 2023 Level Carrying Value Fair Value Carrying Value Fair Value Assets: Cash and cash equivalents 1 $ 421,216 $ 421,216 $ 588,283 $ 588,283 Investment securities 1/2 $ 8,924,959 $ 8,924,912 $ 8,877,354 $ 8,877,281 Non-marketable equity securities 2 $ 252,609 $ 252,609 $ 310,084 $ 310,084 Loans, net 3 $ 24,008,744 $ 22,696,690 $ 24,430,995 $ 23,075,192 Derivative assets 2 $ 112,234 $ 112,234 $ 105,678 $ 105,678 Liabilities: Demand, savings and money market deposits 2 $ 21,911,661 $ 21,911,661 $ 21,374,483 $ 21,374,483 Time deposits 2 $ 5,115,703 $ 5,079,472 $ 5,163,995 $ 5,133,119 FHLB advances 2 $ 3,905,000 $ 3,904,870 $ 5,115,000 $ 5,115,637 Notes and other borrowings 2 $ 708,978 $ 677,947 $ 708,973 $ 676,077 Derivative liabilities 2 $ 106,045 $ 106,045 $ 97,166 $ 97,166

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 9 Commitments and Contingencies The Company issues off-balance sheet financial instruments to meet the financing needs of its customers. These financial instruments include commitments to fund loans, unfunded commitments under existing lines of credit, and commercial and standby letters of credit. These commitments expose the Company to varying degrees of credit and market risk which are essentially the same as those involved in extending loans to customers, and are subject to the same credit policies used in underwriting loans. Collateral may be obtained based on the Company’s credit evaluation of the counterparty. The Company’s maximum exposure to credit loss is represented by the contractual amount of these commitments. Commitments to fund loans These are agreements to lend funds to customers as long as there is no violation of any condition established in the contract. Commitments to fund loans generally have fixed expiration dates or other termination clauses and may require payment of a fee. Many of these commitments are expected to expire without being funded and, therefore, the total commitment amounts do not necessarily represent future liquidity requirements. Unfunded commitments under lines of credit Unfunded commitments under lines of credit include commercial and commercial real estate lines of credit to existing customers, for many of which additional extensions of credit are subject to borrowing base requirements. Some of these commitments may mature without being fully funded, so may not necessarily represent future liquidity requirements. Commercial and standby letters of credit Letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. These letters of credit are primarily issued to support trade transactions or guarantee arrangements. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. Total lending related commitments outstanding at March 31, 2024 were as follows (in thousands): Commitments to fund loans $ 200,034 Unfunded commitments under lines of credit 5,068,914 Commercial and standby letters of credit 142,032 $ 5,410,980 Legal Proceedings The Company is involved in various legal actions arising in the normal course of business. In the opinion of management, based upon advice of legal counsel, the likelihood is remote that the adverse impact of these proceedings, either individually or in the aggregate, would be material to the Company’s consolidated financial position, results of operations or cash flows.

Deposits

Deposits	3 Months Ended
	Mar. 31, 2024
Broker-Dealer [Abstract]
Deposits	Note 10 Deposits The following table presents average balances and weighted average rates paid on deposits for the periods indicated (dollars in thousands): Three Months Ended March 31, 2024 2023 Average Average Rate Paid (1) Average Average Rate Paid (1) Demand deposits: Non-interest bearing $ 6,560,926 — % $ 7,458,221 — % Interest bearing 3,584,363 3.76 % 2,283,505 1.87 % Savings and money market 11,234,259 4.25 % 12,145,922 3.06 % Time 5,231,178 4.45 % 4,526,480 2.81 % $ 26,610,726 3.18 % $ 26,414,128 2.05 % (1) Annualized. The following table presents maturities of time deposits as of March 31, 2024 (in thousands): Maturing in: 2024 $ 4,325,792 2025 466,368 2026 322,827 2027 547 2028 164 Thereafter 5 $ 5,115,703 Included in deposits at March 31, 2024, are public funds deposits of $3.1 billion and brokered deposits of $5.2 billion. Interest expense on deposits for the periods indicated was as follows (in thousands): Three Months Ended March 31, 2024 2023 Interest bearing demand $ 33,507 $ 10,545 Savings and money market 118,639 91,724 Time 57,852 31,361 $ 209,998 $ 133,630 Certain of our depositors participate in various customer rebate programs. During the three months ended March 31, 2024 and 2023, costs related to those programs totaled $14.0 million and $8.5 million, respectively. These expenses are included in "other non-interest expense" in the accompanying consolidated statements of income.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Pay vs Performance Disclosure
Net income	$ 47,980	$ 52,882

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Mar. 31, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Basis of Presentation and Sum_2

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accounting Estimates	Accounting Estimates In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, and expenses and disclosures of contingent assets and liabilities. Actual results could differ significantly from these estimates.
New Accounting Pronouncements, Policy [Policy Text Block]	New Accounting Pronouncements Adopted During the Three Months Ended March 31, 2024 ASU No. 2023-02— Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures using the Proportional Amortization Method (A Consensus of the Emerging Issues Task Force). This ASU was issued to expand the use of the proportional amortization method of accounting for equity investments in tax credit programs beyond those in LIHTC programs. The ASU allows entities to elect the proportional amortization method, on a tax-credit-program-by-tax-credit-program basis, for all equity investments in tax credit programs meeting the eligibility criteria established. The Company adopted this ASU in the first quarter of 2024. There was no impact upon adoption. Currently, all of the Company's equity investments in tax credit programs are in LIHTC programs already accounted for using the proportional amortization method. Accounting Pronouncements Not Yet Adopted ASU No. 2023-07— Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. This ASU augments reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. In addition, the amendments enhance interim disclosure requirements, clarify circumstances in which an entity can disclose multiple segment measures of profit or loss, provide new segment disclosure requirements for entities with a single reportable segment, and contain other disclosure requirements. This ASU is effective for the Company for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. This ASU will have no impact on the Company's consolidated financial position, results of operations, and cash flows. Adoption may lead to additional and revised disclosures in the Company's financial statements starting with the 2024 Annual Report on Form 10-K. ASU No. 2023-09— Income Taxes (Topic 740): Improvements to Income Tax Disclosures . This ASU requires entities to provide additional disclosures, primarily related to the income tax rate reconciliation and income taxes paid. The guidance also eliminates certain existing disclosure requirements related to uncertain tax positions among others. This ASU is effective for the Company for fiscal years beginning after December 15, 2024, and interim periods within fiscal years beginning after December 15, 2025. The adoption of this ASU will have no impact on the Company's consolidated financial position, results of operations, and cash flows. Adoption will lead to additional and revised disclosures in the Company's financial statements.

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2024
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Common Share	The computation of basic and diluted earnings per common share is presented below for the periods indicated (in thousands, except share and per share data): Three Months Ended March 31, c 2024 2023 Basic earnings per common share: Numerator: Net income $ 47,980 $ 52,882 Distributed and undistributed earnings allocated to participating securities (680) (798) Income allocated to common stockholders for basic earnings per common share $ 47,300 $ 52,084 Denominator: Weighted average common shares outstanding 74,509,107 74,755,002 Less average unvested stock awards (1,127,838) (1,193,881) Weighted average shares for basic earnings per common share 73,381,269 73,561,121 Basic earnings per common share $ 0.64 $ 0.71 Diluted earnings per common share: Numerator: Income allocated to common stockholders for basic earnings per common share $ 47,300 $ 52,084 Adjustment for earnings reallocated from participating securities 1 3 Income used in calculating diluted earnings per common share $ 47,301 $ 52,087 Denominator: Weighted average shares for basic earnings per common share 73,381,269 73,561,121 Dilutive effect of certain share-based awards 255,824 447,581 Weighted average shares for diluted earnings per common share 73,637,093 74,008,702 Diluted earnings per common share $ 0.64 $ 0.70

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract]
Schedule of Available-for-sale Securities Reconciliation	Investment securities include investment securities available for sale, marketable equity securities, and investment securities held to maturity. The investment securities portfolio consisted of the following at the dates indicated (in thousands): March 31, 2024 Amortized Cost Gross Unrealized Carrying Value (1) Gains Losses Investment securities available for sale: U.S. Treasury securities $ 139,868 $ 176 $ (9,754) $ 130,290 U.S. Government agency and sponsored enterprise residential MBS 2,193,543 2,549 (34,800) 2,161,292 U.S. Government agency and sponsored enterprise commercial MBS 559,069 116 (64,978) 494,207 Private label residential MBS and CMOs 2,543,764 361 (293,906) 2,250,219 Private label commercial MBS 2,191,733 1,029 (70,491) 2,122,271 Single family real estate-backed securities 356,205 — (14,843) 341,362 Collateralized loan obligations 1,077,232 1,653 (2,393) 1,076,492 Non-mortgage asset-backed securities 103,594 164 (3,634) 100,124 State and municipal obligations 113,280 315 (6,882) 106,713 SBA securities 101,515 41 (3,091) 98,465 9,379,803 $ 6,404 $ (504,772) 8,881,435 Investment securities held to maturity 10,000 10,000 $ 9,389,803 8,891,435 Marketable equity securities 33,524 $ 8,924,959 December 31, 2023 Amortized Cost Gross Unrealized Carrying Value (1) Gains Losses Investment securities available for sale: U.S. Treasury securities $ 139,858 $ 532 $ (9,798) $ 130,592 U.S. Government agency and sponsored enterprise residential MBS 1,962,658 1,810 (40,261) 1,924,207 U.S. Government agency and sponsored enterprise commercial MBS 561,557 107 (63,805) 497,859 Private label residential MBS and CMOs 2,596,231 268 (300,769) 2,295,730 Private label commercial MBS 2,282,833 678 (84,768) 2,198,743 Single family real estate-backed securities 383,984 — (17,729) 366,255 Collateralized loan obligations 1,122,799 735 (10,710) 1,112,824 Non-mortgage asset-backed securities 106,095 156 (3,471) 102,780 State and municipal obligations 107,176 715 (5,273) 102,618 SBA securities 106,237 41 (3,254) 103,024 9,369,428 $ 5,042 $ (539,838) 8,834,632 Investment securities held to maturity 10,000 10,000 $ 9,379,428 8,844,632 Marketable equity securities 32,722 $ 8,877,354 (1) At fair value except for securities held to maturity.
Investments Classified by Contractual Maturity Date	At March 31, 2024, contractual maturities of investment securities available for sale, adjusted for anticipated prepayments when applicable, were as follows (in thousands): Amortized Cost Fair Value Due in one year or less $ 964,667 $ 933,002 Due after one year through five years 5,211,147 5,061,309 Due after five years through ten years 1,952,118 1,774,119 Due after ten years 1,251,871 1,113,005 $ 9,379,803 $ 8,881,435
Gain on Investment Securities, net	The following table provides information about gains (losses) on investment securities for the periods indicated (in thousands): Three Months Ended March 31, 2024 2023 Gross realized gains on investment securities AFS $ 27 $ 772 Gross realized losses on investment securities AFS (55) (20) Net realized gain (loss) (28) 752 Net gain (loss) on marketable equity securities recognized in earnings 803 (13,301) Gain (loss) on investment securities, net $ 775 $ (12,549)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	The following tables present the aggregate fair value and the aggregate amount by which amortized cost exceeded fair value for investment securities available for sale in unrealized loss positions aggregated by investment category and length of time that individual securities had been in continuous unrealized loss positions at the dates indicated (in thousands): March 31, 2024 Less than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses U.S. Treasury securities $ 9,921 $ (54) $ 99,859 $ (9,700) $ 109,780 $ (9,754) U.S. Government agency and sponsored enterprise residential MBS 149,058 (370) 1,515,872 (34,430) 1,664,930 (34,800) U.S. Government agency and sponsored enterprise commercial MBS 15,969 (84) 465,373 (64,894) 481,342 (64,978) Private label residential MBS and CMOs 6,393 (26) 2,219,341 (293,880) 2,225,734 (293,906) Private label commercial MBS 15,825 (42) 1,985,746 (70,449) 2,001,571 (70,491) Single family real estate-backed securities — — 341,362 (14,843) 341,362 (14,843) Collateralized loan obligations — — 679,257 (2,393) 679,257 (2,393) Non-mortgage asset-backed securities — — 77,192 (3,634) 77,192 (3,634) State and municipal obligations 6,309 (65) 55,353 (6,817) 61,662 (6,882) SBA securities 7,777 (35) 85,680 (3,056) 93,457 (3,091) $ 211,252 $ (676) $ 7,525,035 $ (504,096) $ 7,736,287 $ (504,772) December 31, 2023 Less than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses U.S. Treasury securities $ 9,941 $ (27) $ 99,769 $ (9,771) $ 109,710 $ (9,798) U.S. Government agency and sponsored enterprise residential MBS 82,382 (430) 1,646,081 (39,831) 1,728,463 (40,261) U.S. Government agency and sponsored enterprise commercial MBS 3,332 (6) 481,651 (63,799) 484,983 (63,805) Private label residential MBS and CMOs — — 2,255,461 (300,769) 2,255,461 (300,769) Private label commercial MBS 51,434 (323) 2,054,378 (84,445) 2,105,812 (84,768) Single family real estate-backed securities — — 366,255 (17,729) 366,255 (17,729) Collateralized loan obligations 184,652 (348) 880,609 (10,362) 1,065,261 (10,710) Non-mortgage asset-backed securities — — 79,697 (3,471) 79,697 (3,471) State and municipal obligations 24,765 (1,049) 32,380 (4,224) 57,145 (5,273) SBA securities 8,194 (46) 89,763 (3,208) 97,957 (3,254) $ 364,700 $ (2,229) $ 7,986,044 $ (537,609) $ 8,350,744 $ (539,838)

Loans and Allowance for Credi_2

Loans and Allowance for Credit Losses (Tables)	3 Months Ended
	Mar. 31, 2024
Receivables [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable	Loans consisted of the following at the dates indicated (dollars in thousands): March 31, 2024 December 31, 2023 Total Percent of Total Total Percent of Total Commercial: Non-owner occupied commercial real estate $ 5,309,126 21.9 % $ 5,323,241 21.6 % Construction and land 529,645 2.2 % 495,992 2.0 % Owner occupied commercial real estate 1,916,651 7.9 % 1,935,743 7.9 % Commercial and industrial 6,745,622 27.9 % 6,971,981 28.3 % Pinnacle - municipal finance 864,796 3.6 % 884,690 3.6 % Franchise and equipment finance 347,103 1.4 % 380,347 1.5 % Mortgage warehouse lending 456,385 1.9 % 432,663 1.8 % 16,169,328 66.8 % 16,424,657 66.7 % Residential: 1-4 single family residential 6,814,865 28.1 % 6,903,013 28.0 % Government insured residential 1,242,107 5.1 % 1,306,014 5.3 % 8,056,972 33.2 % 8,209,027 33.3 % Total loans 24,226,300 100.0 % 24,633,684 100.0 % Allowance for credit losses (217,556) (202,689) Loans, net $ 24,008,744 $ 24,430,995
Allowance for Credit Losses on Financing Receivables	Activity in the ACL is summarized below for the periods indicated (in thousands): Three Months Ended March 31, 2024 2023 Commercial Residential Total Commercial Residential Total Beginning balance $ 195,058 $ 7,631 $ 202,689 $ 136,205 $ 11,741 $ 147,946 Impact of adoption of ASU 2022-02 N/A N/A N/A (1,677) (117) (1,794) Balance after adoption of ASU 2022-02 195,058 7,631 202,689 134,528 11,624 146,152 Provision (recovery) 16,779 (974) 15,805 17,425 170 17,595 Charge-offs (5,352) (34) (5,386) (7,899) — (7,899) Recoveries 4,444 4 4,448 2,941 3 2,944 Ending balance $ 210,929 $ 6,627 $ 217,556 $ 146,995 $ 11,797 $ 158,792 The following table presents the components of the provision for credit losses for the periods indicated (in thousands): Three Months Ended March 31, 2024 2023 Amount related to funded portion of loans $ 15,805 $ 17,595 Amount related to off-balance sheet credit exposures (520) 2,193 Total provision for credit losses $ 15,285 $ 19,788
Financing Receivable Credit Quality Indicators	Credit quality information Credit quality of loans held for investment is continuously monitored by dedicated residential credit risk management and commercial portfolio management functions. The Company also has a workout and recovery department that monitors the credit quality of criticized and classified loans and an independent internal credit review function. Credit quality indicators for commercial loans Factors that impact risk inherent in commercial portfolio segments include but are not limited to levels of economic activity or potential disruptions in economic activity, health of the national, regional and to a lesser extent global economy, interest rates, industry trends, demographic trends, inflationary trends, including particularly for commercial real estate loans the cost of insurance, patterns of and trends in customer behavior that influence demand for our borrowers' products and services, and commercial real estate values and related market dynamics. Particularly for the office sector, the evolving impact of hybrid and remote work on vacancies and valuations is a factor. Internal risk ratings are considered the most meaningful indicator of credit quality for commercial loans. Internal risk ratings are one indicator of the likelihood that a borrower will default, are a key factor influencing the level and nature of ongoing monitoring of loans and may impact the estimation of the ACL. Internal risk ratings are updated on a continuous basis. Generally, relationships with balances in excess of defined thresholds, ranging from $1 million to $3 million, are re-evaluated at least annually and more frequently if circumstances indicate that a change in risk rating may be warranted. The special mention rating is considered a transitional rating for loans exhibiting potential credit weaknesses that could result in deterioration of repayment prospects at some future date if not checked or corrected and that deserve management’s close attention. These borrowers may exhibit declining cash flows or revenues or increasing leverage. Loans with well-defined credit weaknesses that may result in a loss if the deficiencies are not corrected are assigned a risk rating of substandard. These borrowers may exhibit payment defaults, inadequate cash flows from current operations, operating losses, increasing balance sheet leverage, project cost overruns, unreasonable construction delays, exhausted interest reserves, declining collateral values, frequent overdrafts or past due real estate taxes. Loans with weaknesses so severe that collection in full is highly questionable or improbable, but because of certain reasonably specific pending factors have not been charged off, are assigned an internal risk rating of doubtful. Commercial credit exposure based on internal risk rating (in thousands): March 31, 2024 Amortized Cost By Origination Year Revolving Loans 2024 2023 2022 2021 2020 Prior Total CRE Pass $ 138,654 $ 674,780 $ 1,191,170 $ 616,671 $ 458,186 $ 1,795,375 $ 234,279 $ 5,109,115 Special mention — 19,073 38,869 — 33,037 45,521 3,480 139,980 Substandard — 26,871 63,866 89,228 28,994 357,845 22,872 589,676 Total CRE $ 138,654 $ 720,724 $ 1,293,905 $ 705,899 $ 520,217 $ 2,198,741 $ 260,631 $ 5,838,771 C&I Pass $ 359,240 $ 1,361,500 $ 1,295,020 $ 598,858 $ 339,439 $ 1,383,135 $ 2,707,719 $ 8,044,911 Special mention — — 57,796 22,851 — 55,134 77,741 213,522 Substandard — 8,265 148,115 54,142 17,887 118,475 46,325 393,209 Doubtful — — 7,256 — — 3,375 — 10,631 Total C&I $ 359,240 $ 1,369,765 $ 1,508,187 $ 675,851 $ 357,326 $ 1,560,119 $ 2,831,785 $ 8,662,273 Pinnacle - municipal finance Pass $ 16,152 $ 158,857 $ 131,399 $ 72,274 $ 29,215 $ 456,899 $ — $ 864,796 Total Pinnacle - municipal finance $ 16,152 $ 158,857 $ 131,399 $ 72,274 $ 29,215 $ 456,899 $ — $ 864,796 Franchise and equipment finance Pass $ — $ 6,374 $ 31,690 $ 70,206 $ 43,233 $ 125,526 $ 128 $ 277,157 Substandard — — 14,654 2,777 3,152 46,172 — 66,755 Doubtful — — — — — 3,191 — 3,191 Total Franchise finance $ — $ 6,374 $ 46,344 $ 72,983 $ 46,385 $ 174,889 $ 128 $ 347,103 Mortgage warehouse lending Pass $ — $ — $ — $ — $ — $ — $ 452,087 $ 452,087 Special mention — — — — — — 4,298 4,298 Total Mortgage warehouse lending $ — $ — $ — $ — $ — $ — $ 456,385 $ 456,385 December 31, 2023 Amortized Cost By Origination Year Revolving Loans 2023 2022 2021 2020 2019 Prior Total CRE Pass $ 668,669 $ 1,268,313 $ 662,340 $ 493,675 $ 878,048 $ 1,064,601 $ 281,584 $ 5,317,230 Special mention 19,127 13,377 — — 57,984 4,912 2,152 97,552 Substandard — 42,997 2,103 29,180 186,368 142,049 1,754 404,451 Total CRE $ 687,796 $ 1,324,687 $ 664,443 $ 522,855 $ 1,122,400 $ 1,211,562 $ 285,490 $ 5,819,233 C&I Pass $ 1,382,939 $ 1,423,581 $ 653,730 $ 337,322 $ 431,257 $ 1,040,101 $ 3,069,295 $ 8,338,225 Special mention — 85,306 1,215 13,949 49,526 22,398 47,680 220,074 Substandard 3,841 70,731 86,747 16,063 20,757 91,844 44,633 334,616 Doubtful — 10,580 — — 4,229 — — 14,809 Total C&I $ 1,386,780 $ 1,590,198 $ 741,692 $ 367,334 $ 505,769 $ 1,154,343 $ 3,161,608 $ 8,907,724 Pinnacle - municipal finance Pass $ 170,919 $ 133,988 $ 74,895 $ 31,771 $ 55,338 $ 417,779 $ — $ 884,690 Total Pinnacle - municipal finance $ 170,919 $ 133,988 $ 74,895 $ 31,771 $ 55,338 $ 417,779 $ — $ 884,690 Franchise and equipment finance Pass $ 6,569 $ 32,656 $ 74,170 $ 44,698 $ 76,144 $ 80,302 $ 201 $ 314,740 Special mention — — — 2,279 — — — 2,279 Substandard — 14,959 3,019 1,003 23,574 16,547 — 59,102 Doubtful — — — — 4,226 — — 4,226 Total franchise finance $ 6,569 $ 47,615 $ 77,189 $ 47,980 $ 103,944 $ 96,849 $ 201 $ 380,347 Mortgage warehouse lending Pass $ — $ — $ — $ — $ — $ — $ 432,663 $ 432,663 Total Mortgage warehouse lending $ — $ — $ — $ — $ — $ — $ 432,663 $ 432,663 At March 31, 2024 and December 31, 2023, the balance of revolving loans converted to term loans was immaterial. The following table presents criticized and classified commercial loans, in aggregate by risk rating category, at the dates indicated (in thousands): March 31, 2024 December 31, 2023 Special mention $ 357,800 $ 319,905 Substandard - accruing 966,129 711,266 Substandard - non-accruing 83,511 86,903 Doubtful 13,822 19,035 Total $ 1,421,262 $ 1,137,109 Credit quality indicators for residential loans Management considers delinquency status to be the most meaningful indicator of the credit quality of residential loans, other than government insured residential loans. Delinquency status is updated at least monthly. LTV and FICO scores are also important indicators of credit quality for 1-4 single family residential loans other than government insured loans. FICO scores are generally updated semi-annually, and were most recently updated in the first quarter of 2024. LTVs are typically at origination since we do not routinely update residential appraisals. Substantially all of the government insured residential loans are government insured buyout loans, which the Company buys out of GNMA securitizations upon default. For these loans, traditional measures of credit quality are not particularly relevant considering the guaranteed nature of the loans and the underlying business model. Factors that impact risk inherent in the residential portfolio segment include national and regional economic conditions such as levels of unemployment, wages and interest rates, as well as residential property values. 1-4 Single Family Residential credit exposure, excluding government insured residential loans, based on delinquency status (in thousands): March 31, 2024 Amortized Cost By Origination Year 2024 2023 2022 2021 2020 Prior Total Current $ 45,089 $ 363,306 $ 1,093,852 $ 2,923,477 $ 839,473 $ 1,495,593 $ 6,760,790 30 - 59 Days Past Due — 2,033 5,986 5,444 5,651 17,067 36,181 60 - 89 Days Past Due — — 1,058 — — 221 1,279 90 Days or More Past Due — — 4,505 897 — 11,213 16,615 $ 45,089 $ 365,339 $ 1,105,401 $ 2,929,818 $ 845,124 $ 1,524,094 $ 6,814,865 December 31, 2023 Amortized Cost By Origination Year 2023 2022 2021 2020 2019 Prior Total Current $ 363,123 $ 1,117,039 $ 2,965,840 $ 854,376 $ 296,146 $ 1,255,688 $ 6,852,212 30 - 59 Days Past Due 2,200 1,785 7,201 5,745 — 14,527 31,458 60 - 89 Days Past Due — 2,116 1,465 — 143 2,728 6,452 90 Days or More Past Due — 5,872 — — 1,439 5,580 12,891 $ 365,323 $ 1,126,812 $ 2,974,506 $ 860,121 $ 297,728 $ 1,278,523 $ 6,903,013 1-4 Single Family Residential credit exposure, excluding government insured residential loans, based on LTV (in thousands): March 31, 2024 Amortized Cost By Origination Year LTV 2024 2023 2022 2021 2020 Prior Total Less than 61% $ 3,734 $ 63,498 $ 256,645 $ 1,190,472 $ 321,803 $ 484,128 $ 2,320,280 61% - 70% 8,295 67,262 276,274 804,309 216,282 351,977 1,724,399 71% - 80% 32,772 234,579 570,411 900,665 306,968 646,898 2,692,293 More than 80% 288 — 2,071 34,372 71 41,091 77,893 $ 45,089 $ 365,339 $ 1,105,401 $ 2,929,818 $ 845,124 $ 1,524,094 $ 6,814,865 December 31, 2023 Amortized Cost By Origination Year LTV 2023 2022 2021 2020 2019 Prior Total Less than 61% $ 63,117 $ 260,403 $ 1,211,101 $ 326,771 $ 72,219 $ 428,451 $ 2,362,062 61% - 70% 67,146 280,602 813,682 221,091 71,652 293,784 1,747,957 71% - 80% 235,060 583,724 915,166 312,188 148,483 519,699 2,714,320 More than 80% — 2,083 34,557 71 5,374 36,589 78,674 $ 365,323 $ 1,126,812 $ 2,974,506 $ 860,121 $ 297,728 $ 1,278,523 $ 6,903,013 1-4 Single Family Residential credit exposure, excluding government insured residential loans, based on FICO score (in thousands): March 31, 2024 Amortized Cost By Origination Year FICO 2024 2023 2022 2021 2020 Prior Total 760 or greater $ 32,918 $ 262,572 $ 799,670 $ 2,340,757 $ 671,972 $ 1,071,738 $ 5,179,627 720 - 759 9,389 70,612 188,024 375,750 105,189 207,386 956,350 719 or less or not available 2,782 32,155 117,707 213,311 67,963 244,970 678,888 $ 45,089 $ 365,339 $ 1,105,401 $ 2,929,818 $ 845,124 $ 1,524,094 $ 6,814,865 December 31, 2023 Amortized Cost By Origination Year FICO 2023 2022 2021 2020 2019 Prior Total 760 or greater $ 253,774 $ 810,150 $ 2,378,572 $ 696,363 $ 203,966 $ 893,290 $ 5,236,115 720 - 759 78,882 194,135 392,179 99,412 50,984 210,663 1,026,255 719 or less or not available 32,667 122,527 203,755 64,346 42,778 174,570 640,643 $ 365,323 $ 1,126,812 $ 2,974,506 $ 860,121 $ 297,728 $ 1,278,523 $ 6,903,013
Financing Receivable, Past Due	The following table presents an aging of loans at the dates indicated (in thousands): March 31, 2024 December 31, 2023 Current 30 - 59 60 - 89 90 Days or Total Current 30 - 59 60 - 89 90 Days or Total CRE $ 5,827,723 $ 2,332 $ — $ 8,716 $ 5,838,771 $ 5,779,309 $ 27,918 $ 1,947 $ 10,059 $ 5,819,233 C&I 8,603,178 13,084 160 45,851 8,662,273 8,851,585 16,228 5,536 34,375 8,907,724 Pinnacle - municipal finance 864,796 — — — 864,796 884,690 — — — 884,690 Franchise and equipment finance 345,090 1,593 — 420 347,103 380,347 — — — 380,347 Mortgage warehouse lending 456,385 — — — 456,385 432,663 — — — 432,663 1-4 single family residential 6,760,790 36,181 1,279 16,615 6,814,865 6,852,212 31,458 6,452 12,891 6,903,013 Government insured residential 805,859 127,661 53,216 255,371 1,242,107 835,282 131,652 61,942 277,138 1,306,014 $ 23,663,821 $ 180,851 $ 54,655 $ 326,973 $ 24,226,300 $ 24,016,088 $ 207,256 $ 75,877 $ 334,463 $ 24,633,684
Financing Receivable, Nonaccrual	The following table presents information about loans on non-accrual status at the dates indicated (in thousands): March 31, 2024 December 31, 2023 Amortized Cost Amortized Cost With No Related Allowance Amortized Cost Amortized Cost With No Related Allowance CRE $ 12,258 $ 1,891 $ 13,727 $ 1,947 C&I 62,445 9,303 68,533 14,078 Franchise and equipment finance 22,630 7,305 23,678 7,796 1-4 single family residential 17,847 — 20,513 — $ 115,180 $ 18,499 $ 126,451 $ 23,821
Schedule of Collateral Dependent Loans	The following table presents the amortized cost basis of collateral dependent loans at the dates indicated (in thousands): March 31, 2024 December 31, 2023 Amortized Cost Extent to Which Secured by Collateral Amortized Cost Extent to Which Secured by Collateral CRE $ 10,995 $ 10,995 $ 11,574 $ 11,574 C&I 45,379 34,711 36,401 25,821 Franchise and equipment finance 22,210 18,330 23,488 18,678 $ 78,584 $ 64,036 $ 71,463 $ 56,073
Financing Receivable, Troubled Debt Restructuring	The following tables summarize loans that were modified for borrowers experiencing financial difficulty, by type of modification, during the periods indicated (dollars in thousands): Three Months Ended March 31, 2024 Interest Rate Reduction Term Extension Combination - Interest Rate Reduction and Term Extension Total % (1) Total % (1) Total % (1) Total CRE $ — — % $ 8,486 — % $ — — % $ 8,486 C&I — — % 1,743 — % 29 — % 1,772 Government insured residential — — % 14,422 1 % 2,623 — % 17,045 $ — $ 24,651 $ 2,652 $ 27,303 Three Months Ended March 31, 2023 Interest Rate Reduction Term Extension Combination - Interest Rate Reduction and Term Extension Total % (1) Total % (1) Total % (1) Total C&I $ — — % $ 4,918 — % $ — — % $ 4,918 1-4 single family residential 766 — % — — % — — % 766 Government insured residential 109 — % 36,920 2 % 2,312 — % 39,341 $ 875 $ 41,838 $ 2,312 $ 45,025 (1) Represents percentage of loans receivable in each category. The following tables summarize the financial effect of the modifications made to borrowers experiencing difficulty, during the periods indicated: Three Months Ended March 31, 2024 Financial Effect Term Extension: CRE Added a weighted average 0.2 years to the term of the modified loans. C&I Added a weighted average 0.3 years to the term of the modified loans. Government insured residential Added a weighted average 11.2 years to the term of the modified loans. Combination - Interest Rate Reduction and Term Extension: C&I Reduced weighted average contractual interest rate from 21.2% to 5.0% and added a weighted average 2.2 years to the term of the modified loans. Government insured residential Reduced weighted average contractual interest rate from 6.8% to 6.4% and added a weighted average 3.7 years to the term of the modified loans. Three Months Ended March 31, 2023 Financial Effect Interest Rate Reduction: 1-4 single family residential Reduced weighted average contractual interest rate from 3.8% to 3.1%. Government insured residential Reduced weighted average contractual interest rate from 4.8% to 3.8%. Term Extension: C&I Added a weighted average 0.7 years to the term of the modified loans. Government insured residential Added a weighted average 9.6 years to the term of the modified loans. Combination - Interest Rate Reduction and Term Extension: Government insured residential Reduced weighted average contractual interest rate from 5.8% to 4.9% and added a weighted average 6.9 years to the term of the modified loans. The following tables present the aging at March 31, 2024, of loans that were modified within the previous 12 months, and at March 31, 2023, of loans that were modified since January 1, 2023, the date of adoption of ASU 2022-02 (in thousands): March 31, 2024 Current 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due Total CRE $ 8,486 $ — $ — $ — $ 8,486 C&I 3,953 — — — 3,953 Franchise and equipment finance 10,425 — — — 10,425 1-4 single family residential 74 — — — 74 Government insured residential 17,123 9,001 4,439 20,974 51,537 $ 40,061 $ 9,001 $ 4,439 $ 20,974 $ 74,475 March 31, 2023 Current 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due Total C&I $ 4,918 $ — $ — $ — $ 4,918 1-4 single family residential 766 — — — 766 Government insured residential 22,346 11,083 4,683 1,229 39,341 $ 28,030 $ 11,083 $ 4,683 $ 1,229 $ 45,025 The following tables summarize loans that were modified within the previous 12 months and defaulted during the periods indicated (in thousands): Three Months Ended March 31, 2024 Interest Rate Reduction Term Extension Combination - Interest Rate Reduction and Term Extension Total Government insured residential $ — $ 10,262 $ — $ 10,262 Three Months Ended March 31, 2023 Interest Rate Reduction Term Extension Combination - Interest Rate Reduction and Term Extension Total Government insured residential $ 109 $ 5,070 $ 733 $ 5,912
Accounts Receivable, Allowance for Credit Loss	The following table presents gross charge-offs during the three months ended March 31, 2024, by year of origination (in thousands): 2024 2023 2022 2021 2020 Prior to 2020 Revolving Loans Total CRE $ — $ — $ — $ — $ — $ 486 $ — $ 486 C&I — 191 3,186 29 — 591 79 4,076 Franchise and equipment finance — — — — — 790 — 790 Residential — — — — — 34 — 34 $ — $ 191 $ 3,186 $ 29 $ — $ 1,901 $ 79 $ 5,386
Impaired Financing Receivables	The following table presents the amortized cost basis of residential PCD loans and the related amount of non-credit discount, net of the related ACL, at the dates indicated (in thousands): March 31, 2024 December 31, 2023 UPB $ 76,342 $ 80,123 Non-credit discount (33,171) (35,249) Total amortized cost of PCD loans 43,171 44,874 ACL related to PCD loans (134) (161) PCD loans, net $ 43,037 $ 44,713

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities (Tables)	3 Months Ended
	Mar. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Interest Rate Contract Derivative Financial Instruments and Related Hedged Items	The following table summarizes the Company's derivatives designated as hedging instruments as of the dates indicated (in thousands): March 31, 2024 December 31, 2023 Notional Amount Fair Value (1) Notional Amount Fair Value (1) Asset Liability Asset Liability Derivatives designated as cash flow hedges: Interest rate swaps $ 2,855,000 $ — $ (3,051) $ 3,215,000 $ — $ (1,048) Interest rate caps purchased 200,000 9,647 — 200,000 10,157 — Interest rate collar 125,000 — (139) 125,000 84 — Derivatives designated as fair value hedges: Interest rate swaps 100,000 — — 100,000 — — $ 3,280,000 $ 9,647 $ (3,190) $ 3,640,000 $ 10,241 $ (1,048) (1) The fair values of derivatives are included in other assets or other liabilities in the consolidated balance sheets.
Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The following table provides information about the amount of gain (loss) related to derivatives designated as cash flow hedges reclassified from AOCI into interest income or expense for the periods indicated (in thousands): Three Months Ended March 31, 2024 2023 Location of gain (loss) reclassified from AOCI into income: Interest expense on borrowings $ 15,712 $ 7,497 Interest expense on deposits 4,926 5,049 Interest income on loans (816) (392) $ 19,822 $ 12,154
Derivative and Hedging Activities - Carrying Value of Hedged Item and Cumulative Fair Value Adjustments	The following table provides information about the hedged items related to derivatives designated as fair value hedges at the date indicated (in thousands): March 31, 2024 December 31, 2023 Location in Consolidated Balance Sheets Contractual balance outstanding of hedged item (1) $ 100,000 $ 100,000 Loans Cumulative fair value hedging adjustments $ (1,022) $ (1,656) Loans (1) This amount is included in the amortized cost basis of a closed portfolio of loans used to designate hedging relationships in a portfolio layer method hedge in which the hedged item is anticipated to be outstanding for the designated hedge period. The amortized cost basis of the closed portfolio used in this hedging relationship was $976 million and $992 million, respectively, at March 31, 2024 and December 31, 2023.
Derivatives Not Designated as Hedging Instruments	The following table summarizes the Company's derivatives not designated as hedging instruments as of the dates indicated (in thousands): March 31, 2024 December 31, 2023 Notional Amount Fair Value (1) Notional Amount Fair Value (1) Asset Liability Asset Liability Pay-fixed interest rate swaps $ 2,227,542 $ 93,495 $ (6,958) $ 2,166,813 $ 76,793 $ (16,702) Pay-variable interest rate swaps 2,227,542 6,958 (93,495) 2,166,813 16,702 (77,257) Interest rate caps purchased 65,610 2,110 — 65,610 1,922 — Interest rate caps sold 65,610 — (2,110) 65,610 — (1,922) RPAs purchased 78,838 24 — 77,846 20 — RPAs sold 335,868 — (292) 284,910 — (237) $ 5,001,010 $ 102,587 $ (102,855) $ 4,827,602 $ 95,437 $ (96,118) (1) Fair values of these derivatives are included in other assets and other liabilities in the consolidated balance sheets.
Schedule of Interest Rate Swaps Subject to Master Netting Agreements	The Company does not offset assets and liabilities under master netting agreements for financial reporting purposes. Information on interest rate swaps and caps subject to these agreements is as follows at the dates indicated (in thousands): March 31, 2024 Gross Amounts Offset in Balance Net Amounts Presented in Gross Amounts Not Offset in Gross Amounts Derivative Collateral Net Amount Derivative assets $ 105,252 $ — $ 105,252 $ (10,148) $ (94,946) $ 158 Derivative liabilities (10,148) — (10,148) 10,148 — — $ 95,104 $ — $ 95,104 $ — $ (94,946) $ 158 December 31, 2023 Gross Amounts Offset in Balance Net Amounts Presented in Gross Amounts Not Offset in Gross Amounts Derivative Collateral Net Amount Derivative assets $ 88,956 $ — $ 88,956 $ (15,154) $ (73,730) $ 72 Derivative liabilities (17,750) — (17,750) 15,154 2,596 — $ 71,206 $ — $ 71,206 $ — $ (71,134) $ 72

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2024
Equity [Abstract]
Schedule of Changes in AOCI	Changes in other comprehensive income are summarized as follows for the periods indicated (in thousands): Three Months Ended March 31, 2024 2023 Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax Unrealized gains (losses) on investment securities available for sale: Net unrealized holding gains arising during the period $ 36,400 $ (9,464) $ 26,936 $ 101,265 $ (26,329) $ 74,936 Amounts reclassified to (gain) loss on investment securities available for sale, net 28 (7) 21 (752) 196 (556) Net change in unrealized gains (losses) on investment securities available for sale 36,428 (9,471) 26,957 100,513 (26,133) 74,380 Unrealized gains (losses) on derivative instruments: Net unrealized holding gains (losses) arising during the period 28,654 (7,450) 21,204 (2,926) 761 (2,165) Amounts reclassified to interest expense on deposits (4,926) 1,281 (3,645) (5,049) 1,313 (3,736) Amounts reclassified to interest expense on borrowings (15,712) 4,085 (11,627) (7,497) 1,949 (5,548) Amounts reclassified to interest income on loans 816 (212) 604 392 (102) 290 Net change in unrealized gains (losses) on derivative instruments 8,832 (2,296) 6,536 (15,080) 3,921 (11,159) Other comprehensive income $ 45,260 $ (11,767) $ 33,493 $ 85,433 $ (22,212) $ 63,221
Schedule of the Categories of AOCI and Changes Therein	The categories of AOCI and changes therein are presented below for the periods indicated (in thousands): Unrealized Loss on Investment Securities Available for Sale Unrealized Gain on Derivative Instruments Total Balance at December 31, 2023 $ (395,746) $ 38,325 $ (357,421) Other comprehensive income 26,957 6,536 33,493 Balance at March 31, 2024 $ (368,789) $ 44,861 $ (323,928) Balance at December 31, 2022 $ (498,911) $ 61,006 $ (437,905) Other comprehensive income (loss) 74,380 (11,159) 63,221 Balance at March 31, 2023 $ (424,531) $ 49,847 $ (374,684)

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2024
Fair Value Disclosures [Abstract]
Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following tables present assets and liabilities measured at fair value on a recurring basis at the dates indicated (in thousands): March 31, 2024 Level 1 Level 2 Total Investment securities available for sale: U.S. Treasury securities $ 130,290 $ — $ 130,290 U.S. Government agency and sponsored enterprise residential MBS — 2,161,292 2,161,292 U.S. Government agency and sponsored enterprise commercial MBS — 494,207 494,207 Private label residential MBS and CMOs — 2,250,219 2,250,219 Private label commercial MBS — 2,122,271 2,122,271 Single family real estate-backed securities — 341,362 341,362 Collateralized loan obligations — 1,076,492 1,076,492 Non-mortgage asset-backed securities — 100,124 100,124 State and municipal obligations — 106,713 106,713 SBA securities — 98,465 98,465 Marketable equity securities 33,524 — 33,524 Derivative assets — 112,234 112,234 Total assets at fair value $ 163,814 $ 8,863,379 $ 9,027,193 Derivative liabilities $ — $ (106,045) $ (106,045) Total liabilities at fair value $ — $ (106,045) $ (106,045) December 31, 2023 Level 1 Level 2 Total Investment securities available for sale: U.S. Treasury securities $ 130,592 $ — $ 130,592 U.S. Government agency and sponsored enterprise residential MBS — 1,924,207 1,924,207 U.S. Government agency and sponsored enterprise commercial MBS — 497,859 497,859 Private label residential MBS and CMOs — 2,295,730 2,295,730 Private label commercial MBS — 2,198,743 2,198,743 Single family real estate-backed securities — 366,255 366,255 Collateralized loan obligations — 1,112,824 1,112,824 Non-mortgage asset-backed securities — 102,780 102,780 State and municipal obligations — 102,618 102,618 SBA securities — 103,024 103,024 Marketable equity securities 32,722 — 32,722 Derivative assets — 105,678 105,678 Total assets at fair value $ 163,314 $ 8,809,718 $ 8,973,032 Derivative liabilities $ — $ (97,166) $ (97,166) Total liabilities at fair value $ — $ (97,166) $ (97,166)
Schedule of Assets for Which Nonrecurring Changes in Fair Value have been Recorded	The following table presents the net carrying value of assets classified within level 3 of the fair value hierarchy at the dates indicated, for which non-recurring changes in fair value were recorded during the period then ended (in thousands): March 31, 2024 December 31, 2023 Collateral dependent loans $ 52,020 $ 50,885 OREO 1,260 29 $ 53,280 $ 50,914
Schedule of the Carrying Value and Fair Value of Financial Instruments	The following table presents the carrying value and fair value of financial instruments and the level within the fair value hierarchy in which those measurements are classified at the dates indicated (dollars in thousands): March 31, 2024 December 31, 2023 Level Carrying Value Fair Value Carrying Value Fair Value Assets: Cash and cash equivalents 1 $ 421,216 $ 421,216 $ 588,283 $ 588,283 Investment securities 1/2 $ 8,924,959 $ 8,924,912 $ 8,877,354 $ 8,877,281 Non-marketable equity securities 2 $ 252,609 $ 252,609 $ 310,084 $ 310,084 Loans, net 3 $ 24,008,744 $ 22,696,690 $ 24,430,995 $ 23,075,192 Derivative assets 2 $ 112,234 $ 112,234 $ 105,678 $ 105,678 Liabilities: Demand, savings and money market deposits 2 $ 21,911,661 $ 21,911,661 $ 21,374,483 $ 21,374,483 Time deposits 2 $ 5,115,703 $ 5,079,472 $ 5,163,995 $ 5,133,119 FHLB advances 2 $ 3,905,000 $ 3,904,870 $ 5,115,000 $ 5,115,637 Notes and other borrowings 2 $ 708,978 $ 677,947 $ 708,973 $ 676,077 Derivative liabilities 2 $ 106,045 $ 106,045 $ 97,166 $ 97,166

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Schedule of the Total Lending Related Commitments Outstanding	Total lending related commitments outstanding at March 31, 2024 were as follows (in thousands): Commitments to fund loans $ 200,034 Unfunded commitments under lines of credit 5,068,914 Commercial and standby letters of credit 142,032 $ 5,410,980

Deposits (Tables)

Deposits (Tables)	3 Months Ended
	Mar. 31, 2024
Broker-Dealer [Abstract]
Summary of Average Balances and Weighted Average Rates Paid on Deposits	The following table presents average balances and weighted average rates paid on deposits for the periods indicated (dollars in thousands): Three Months Ended March 31, 2024 2023 Average Average Rate Paid (1) Average Average Rate Paid (1) Demand deposits: Non-interest bearing $ 6,560,926 — % $ 7,458,221 — % Interest bearing 3,584,363 3.76 % 2,283,505 1.87 % Savings and money market 11,234,259 4.25 % 12,145,922 3.06 % Time 5,231,178 4.45 % 4,526,480 2.81 % $ 26,610,726 3.18 % $ 26,414,128 2.05 % (1) Annualized.
Time Deposit Maturities	The following table presents maturities of time deposits as of March 31, 2024 (in thousands): Maturing in: 2024 $ 4,325,792 2025 466,368 2026 322,827 2027 547 2028 164 Thereafter 5 $ 5,115,703
schedule of interest expense on deposits	Interest expense on deposits for the periods indicated was as follows (in thousands): Three Months Ended March 31, 2024 2023 Interest bearing demand $ 33,507 $ 10,545 Savings and money market 118,639 91,724 Time 57,852 31,361 $ 209,998 $ 133,630

Basis of Presentation and Sum_3

Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Jan. 01, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Allowance for credit losses	$ 217,556		$ 158,792		$ 147,946
Stockholders' equity	2,640,392	$ 2,577,921	2,481,394		2,435,981
Retained Earnings
Segment Reporting Information [Line Items]
Stockholders' equity	$ 2,677,403	$ 2,650,956	$ 2,585,981		$ 2,551,400
Cumulative Effect, Period of Adoption, Adjustment
Segment Reporting Information [Line Items]
Allowance for credit losses				$ (1,794)
Stockholders' equity				1,336
Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings
Segment Reporting Information [Line Items]
Stockholders' equity				$ 1,336

Earnings Per Common Share (Comp

Earnings Per Common Share (Computation of Basic and Diluted Earnings per Common Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Numerator:
Net income	$ 47,980	$ 52,882
Distributed and undistributed earnings allocated to participating securities	(680)	(798)
Income allocated to common stockholders for basic earnings per common share	$ 47,300	$ 52,084
Denominator:
Weighted average common shares outstanding	74,509,107	74,755,002
Less average unvested stock awards	(1,127,838)	(1,193,881)
Weighted Average Number of Shares Outstanding, Basic, Total	73,381,269	73,561,121
Basic earnings per common share	$ 0.64	$ 0.71
Numerator:
Income allocated to common stockholders for basic earnings per common share	$ 47,300	$ 52,084
Adjustment for earnings reallocated from participating securities	1	3
Income used in calculating diluted earnings per common share	$ 47,301	$ 52,087
Denominator:
Weighted Average Number of Shares Outstanding, Basic, Total	73,381,269	73,561,121
Dilutive effect of certain share-based awards	255,824	447,581
Weighted average shares for diluted earnings per common share	73,637,093	74,008,702
Diluted earnings per common share	$ 0.64	$ 0.70

Earnings Per Common Share Earni

Earnings Per Common Share Earnings per Common Share (Narrative) (Details) - shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Potentially dilutive securities outstanding (in Shares)	1,142,702	1,190,511

Investment Securities (Schedule

Investment Securities (Schedule of Investment Securities Available for Sale) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost, after Allowance for Credit Loss	$ 9,379,803	$ 9,369,428
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	6,404	5,042
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	504,772	539,838
Debt Securities, Available-for-sale	8,881,435	8,834,632
Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss	9,389,803	9,379,428
Debt Securities, Available-for-sale and Held-to-maturity	8,891,435	8,844,632
Investment securities (including securities reported at fair value of $8,914,959 and $8,867,354)	8,924,959	8,877,354
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost, after Allowance for Credit Loss	139,868	139,858
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	176	532
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	9,754	9,798
Debt Securities, Available-for-sale	130,290	130,592
U.S. Government agency and sponsored enterprise residential MBS
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost, after Allowance for Credit Loss	2,193,543	1,962,658
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	2,549	1,810
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	34,800	40,261
Debt Securities, Available-for-sale	2,161,292	1,924,207
U.S. Government agency and sponsored enterprise commercial MBS
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost, after Allowance for Credit Loss	559,069	561,557
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	116	107
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	64,978	63,805
Debt Securities, Available-for-sale	494,207	497,859
Private label residential MBS and CMOs
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost, after Allowance for Credit Loss	2,543,764	2,596,231
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	361	268
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	293,906	300,769
Debt Securities, Available-for-sale	2,250,219	2,295,730
Private label commercial MBS
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost, after Allowance for Credit Loss	2,191,733	2,282,833
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	1,029	678
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	70,491	84,768
Debt Securities, Available-for-sale	2,122,271	2,198,743
Single family real estate-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost, after Allowance for Credit Loss	356,205	383,984
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	14,843	17,729
Debt Securities, Available-for-sale	341,362	366,255
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost, after Allowance for Credit Loss	1,077,232	1,122,799
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	1,653	735
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	2,393	10,710
Debt Securities, Available-for-sale	1,076,492	1,112,824
Non-mortgage asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost, after Allowance for Credit Loss	103,594	106,095
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	164	156
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	3,634	3,471
Debt Securities, Available-for-sale	100,124	102,780
State and municipal obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost, after Allowance for Credit Loss	113,280	107,176
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	315	715
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	6,882	5,273
Debt Securities, Available-for-sale	106,713	102,618
SBA securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost, after Allowance for Credit Loss	101,515	106,237
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	41	41
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	3,091	3,254
Debt Securities, Available-for-sale	98,465	103,024
Investment securities held to maturity
Debt Securities, Available-for-sale [Line Items]
Investment securities held to maturity	10,000	10,000
Marketable equity securities
Debt Securities, Available-for-sale [Line Items]
Equity Securities, FV-NI	$ 33,524	$ 32,722

Investment Securities (Schedu_2

Investment Securities (Schedule of Maturities of Investment Securities Available for Sale) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Due in one year or less, Amortized Cost	$ 964,667
Due after one year through five years, Amortized Cost	5,211,147
Due after five years through ten years, Amortized Cost	1,952,118
Due after ten years, Amortized Cost	1,251,871
Amortized Cost	9,379,803	$ 9,369,428
Due in one year or less, Fair Value	933,002
Due after one year through five years, Fair Value	5,061,309
Due after five years through ten years, Fair Value	1,774,119
Due after ten years, Fair Value	1,113,005
Fair Value	$ 8,881,435	$ 8,834,632

Investment Securities (Schedu_3

Investment Securities (Schedule of Gains and Losses on the Sale and Exchange of Investment Securities Available for Sale) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Proceeds from sale of investment securities	$ 32,067	$ 131,879
Gross realized gains on investment securities AFS	27	772
Gross realized losses on investment securities AFS	(55)	(20)
Net realized gain (loss)	(28)	752
Net gain (loss) on marketable equity securities recognized in earnings	803	(13,301)
Gain (loss) on investment securities, net	$ 775	$ (12,549)

Investment Securities (Schedu_4

Investment Securities (Schedule of the Aggregate Fair Value and Amount by which Amortized Cost Exceeds Fair Value for Investment Securities that are in Unrealized Loss Positions) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 211,252	$ 364,700
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	676	2,229
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	7,525,035	7,986,044
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	504,096	537,609
Debt Securities, Available-for-sale, Unrealized Loss Position	7,736,287	8,350,744
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	504,772	539,838
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	9,921	9,941
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	54	27
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	99,859	99,769
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	9,700	9,771
Debt Securities, Available-for-sale, Unrealized Loss Position	109,780	109,710
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	9,754	9,798
U.S. Government agency and sponsored enterprise residential MBS
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	149,058	82,382
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	370	430
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,515,872	1,646,081
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	34,430	39,831
Debt Securities, Available-for-sale, Unrealized Loss Position	1,664,930	1,728,463
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	34,800	40,261
U.S. Government agency and sponsored enterprise commercial MBS
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	15,969	3,332
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	84	6
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	465,373	481,651
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	64,894	63,799
Debt Securities, Available-for-sale, Unrealized Loss Position	481,342	484,983
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	64,978	63,805
Private label residential MBS and CMOs
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	6,393	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	26	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	2,219,341	2,255,461
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	293,880	300,769
Debt Securities, Available-for-sale, Unrealized Loss Position	2,225,734	2,255,461
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	293,906	300,769
Private label commercial MBS
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	15,825	51,434
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	42	323
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,985,746	2,054,378
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	70,449	84,445
Debt Securities, Available-for-sale, Unrealized Loss Position	2,001,571	2,105,812
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	70,491	84,768
Single family real estate-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	341,362	366,255
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	14,843	17,729
Debt Securities, Available-for-sale, Unrealized Loss Position	341,362	366,255
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	14,843	17,729
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	0	184,652
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	0	348
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	679,257	880,609
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	2,393	10,362
Debt Securities, Available-for-sale, Unrealized Loss Position	679,257	1,065,261
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	2,393	10,710
Non-mortgage asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	77,192	79,697
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	3,634	3,471
Debt Securities, Available-for-sale, Unrealized Loss Position	77,192	79,697
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	3,634	3,471
State and municipal obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	6,309	24,765
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	65	1,049
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	55,353	32,380
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	6,817	4,224
Debt Securities, Available-for-sale, Unrealized Loss Position	61,662	57,145
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	6,882	5,273
SBA securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	7,777	8,194
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	35	46
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	85,680	89,763
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	3,056	3,208
Debt Securities, Available-for-sale, Unrealized Loss Position	93,457	97,957
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 3,091	$ 3,254

Investment Securities (Narrativ

Investment Securities (Narrative) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($) bond rental security	Dec. 31, 2023 USD ($) bond
Debt Securities, Available-for-sale [Line Items]
Number of held-to-maturity securities | bond	1	1
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	540
Number of securities which impairment considered insignificant (in Securities) | security	138
Available-for-sale securities, gross unrealized loss, considered insignificant | $	$ 1,300
Interest Receivable | $	138,000	$ 138,000
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain (Loss), before Tax | $	(498,400)	(534,800)
Change in Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain (Loss), before Tax | $	36,400
Available-for-sale Securities
Debt Securities, Available-for-sale [Line Items]
Securities pledged as collateral | $	7,700,000	7,700,000
Interest Receivable | $	$ 38,000	$ 37,000
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	6
U.S. Government agency and sponsored enterprise residential MBS
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	104
U.S. Government agency and sponsored enterprise commercial MBS
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	27
Private label residential MBS and CMOs
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	115
Percentage of weighted average collateral loss	2%
Percentage of weighted average credit support	18%
Percentage of securities rated AAA	95%
Percentage of securities rated AA	4%
Percentage of securities rated A	1%
Private label commercial MBS
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	88
Percentage of weighted average collateral loss	6%
Percentage of weighted average credit support	43%
Percentage of securities rated AAA	84%
Percentage of securities rated AA	12%
Percentage of securities rated A	4%
Single family real estate-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	11
Percentage of weighted average collateral loss	7%
Percentage of weighted average credit support	55%
Percentage of securities rated AAA	54%
Percentage of securities rated AA	18%
Number of Securities Not Rated	1
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	15
Percentage of weighted average collateral loss	11%
Percentage of weighted average credit support	42%
Percentage of securities rated AAA	80%
Percentage of securities rated AA	12%
Percentage of securities rated A	8%
Non-mortgage asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	6
Percentage of weighted average collateral loss	4%
Percentage of weighted average credit support	26%
Percentage of securities rated AAA	36%
Percentage of securities rated AA	64%
State and municipal obligations
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	8
Percentage of securities rated AAA	87%
Percentage of securities rated AA	13%
SBA securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	22

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses (Narrative) (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Deferred Income	$ 41,000,000		$ 45,000,000
Payments to Acquire Loans Held-for-investment	(66,570,000)	$ (186,792,000)
Allowance for credit losses	(217,556,000)	(158,792,000)		$ (147,946,000)
Financing Receivable, before Allowance for Credit Loss and Fee	24,226,300,000		24,633,684,000
Allowance for credit losses	217,556,000	158,792,000		$ 147,946,000
Financing Receivable, 90 Days or More Past Due, Still Accruing	256,000,000		278,000,000
Pledged Financial Instruments, Not Separately Reported, Loans Receivable, For Federal Home Loan Bank Debt	$ 16,200,000,000		$ 16,500,000,000
Allowance for credit losses to total loans (in percent)	0.90%		0.82%
Interest Receivable	$ 138,000,000		$ 138,000,000
Financing receivable, allowance for credit loss, period increase	14,900,000
Sales-type and Direct Financing Leases, Lease Receivable	583,000,000		602,000,000
Small business finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Nonaccrual	40,000,000		41,800,000
Financing Receivable, 90 Days or More Past Due, Still Accruing	37,800,000		39,700,000
Financing Receivable, Nonaccrual	40,000,000		41,800,000
1-4 single family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payments to Acquire Loans Held-for-investment	(67,000,000)	(187,000,000)
Financing Receivable, before Allowance for Credit Loss and Fee	6,814,865,000		6,903,013,000
1-4 single family residential | Interest and Fee Income, Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payments to Acquire Loans Held-for-investment	(4,000,000)	$ (4,300,000)
US Government Agency Insured Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans in Process of Foreclosure, Amount	225,000,000		250,000,000
Financing Receivable, before Allowance for Credit Loss and Fee	1,242,107,000		1,306,014,000
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans in Process of Foreclosure, Amount	238,000,000		262,000,000
Commercial Portfolio Segment [Member] | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable credit quality indicator, the value at which relationships are reevaluated at least annually	3,000,000
Financing receivable credit quality indicator, the value at which relationships are reevaluated at least annually	3,000,000
Commercial Portfolio Segment [Member] | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable credit quality indicator, the value at which relationships are reevaluated at least annually	1,000,000
Financing receivable credit quality indicator, the value at which relationships are reevaluated at least annually	1,000,000
Financial Asset Acquired with Credit Deterioration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, after Allowance for Credit Loss	43,037,000		44,713,000
Allowance for credit losses	(134,000)		(161,000)
Financing Receivable, before Allowance for Credit Loss and Fee	43,171,000		44,874,000
Financing Receivable, Purchased with Credit Deterioration, Discount (Premium)	(33,171,000)		(35,249,000)
Impaired Financing Receivable, Unpaid Principal Balance	76,342,000		80,123,000
Allowance for credit losses	134,000		161,000
Commercial and industrial Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	8,662,273,000		8,907,724,000
Commercial and industrial Portfolio Segment | Small business finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, 90 Days or More Past Due, Still Accruing	29,500,000
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	5,838,771,000		$ 5,819,233,000
Commercial Real Estate Portfolio Segment [Member] | Small business finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, 90 Days or More Past Due, Still Accruing	$ 8,300,000

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses (Schedule of Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 24,226,300	$ 24,633,684
Percent of total loans (in Percent)	100%	100%
Loans and Leases Receivable, Allowance	$ (217,556)	$ (202,689)
Loans and Leases Receivable, Net Amount, Total	24,008,744	24,430,995
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 16,169,328	$ 16,424,657
Percent of total loans (in Percent)	66.80%	66.70%
1-4 single family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 6,814,865	$ 6,903,013
Percent of total loans (in Percent)	28.10%	28%
Government Insured Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 1,242,107	$ 1,306,014
Percent of total loans (in Percent)	5.10%	5.30%
Commercial real estate, Non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 5,309,126	$ 5,323,241
Percent of total loans (in Percent)	21.90%	21.60%
Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 529,645	$ 495,992
Percent of total loans (in Percent)	2.20%	2%
Commercial real estate, Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 1,916,651	$ 1,935,743
Percent of total loans (in Percent)	7.90%	7.90%
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 6,745,622	$ 6,971,981
Percent of total loans (in Percent)	27.90%	28.30%
Pinnacle Public Finance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 864,796	$ 884,690
Percent of total loans (in Percent)	3.60%	3.60%
Mortgage warehouse lending [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 456,385	$ 432,663
Percent of total loans (in Percent)	1.90%	1.80%
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 8,056,972	$ 8,209,027
Percent of total loans (in Percent)	33.20%	33.30%
Bridge - franchise and equipment finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 347,103	$ 380,347
Percent of total loans (in Percent)	1.40%	1.50%

Loans and Allowance for Credi_5

Loans and Allowance for Credit Losses (ALLL Rollforward) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Jan. 01, 2023
Allowance for Loan and Lease Losses [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance		$ 147,946
Financing Receivable, Allowance for Credit Loss	$ (217,556)	(158,792)
Provision for credit losses	15,285	19,788
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)	(520)	2,193
Charge-offs	(5,386)	(7,899)
Recoveries	4,448	2,944
Allowance for loan and lease losses, end of period	217,556	158,792
Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Financing Receivable, Allowance for Credit Loss			$ 1,794
Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for Loan and Lease Losses [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance	202,689
Financing Receivable, Allowance for Credit Loss			(146,152)
Residential Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance		11,741
Financing Receivable, Allowance for Credit Loss	(6,627)	(11,797)
Charge-offs	(34)	0
Recoveries	4	3
Allowance for loan and lease losses, end of period	6,627	11,797
Residential Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Financing Receivable, Allowance for Credit Loss			117
Residential Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for Loan and Lease Losses [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance	7,631
Financing Receivable, Allowance for Credit Loss			(11,624)
Commercial Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance		136,205
Financing Receivable, Allowance for Credit Loss	(210,929)	(146,995)
Charge-offs	(5,352)	(7,899)
Recoveries	4,444	2,941
Allowance for loan and lease losses, end of period	210,929	146,995
Commercial Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Financing Receivable, Allowance for Credit Loss			1,677
Commercial Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for Loan and Lease Losses [Roll Forward]
Financing Receivable, Allowance for Credit Loss, Beginning Balance	195,058
Financing Receivable, Allowance for Credit Loss			$ (134,528)
Funded Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Provision for credit losses	15,805	17,595
Funded Loans [Member] | Residential Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Provision for credit losses	(974)	170
Funded Loans [Member] | Commercial Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Provision for credit losses	$ 16,779	$ 17,425

Loans and Allowance for Credi_6

Loans and Allowance for Credit Losses Loans and Allowance for Credit Losses (Gross Charge-Offs by Year of Origination) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]
2024	$ 0
2023	191
2022	3,186
2021	29
2020	0
Prior to 2020	1,901
Revolving Loans	79
Total	5,386	$ 7,899
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
2024	0
2023	0
2022	0
2021	0
2020	0
Prior to 2020	486
Revolving Loans	0
Total	486
Commercial and industrial Portfolio Segment
Financing Receivable, Allowance for Credit Loss [Line Items]
2024	0
2023	191
2022	3,186
2021	29
2020	0
Prior to 2020	591
Revolving Loans	79
Total	4,076
Bridge - franchise and equipment finance
Financing Receivable, Allowance for Credit Loss [Line Items]
2024	0
2023	0
2022	0
2021	0
2020	0
Prior to 2020	790
Revolving Loans	0
Total	790
1-4 single family residential
Financing Receivable, Allowance for Credit Loss [Line Items]
2024	0
2023	0
2022	0
2021	0
2020	0
Prior to 2020	34
Revolving Loans	0
Total	$ 34

Loans and Allowance for Credi_7

Loans and Allowance for Credit Losses Loans and Allowance for Credit Losses (Balance of ALLL and Related Loans) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision for credit losses	$ 15,285	$ 19,788
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)	(520)	2,193
Funded Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision for credit losses	$ 15,805	$ 17,595

Loans and Allowance for Credi_8

Loans and Allowance for Credit Losses (Schedule of Commercial Credit Exposure Based on Internal Risk Ratings) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 24,226,300	$ 24,633,684
Pinnacle Public Finance [Member]
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	16,152	170,919
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	158,857	133,988
Financing Receivable, Originated Two Years before Latest Fiscal Year	131,399	74,895
Financing Receivable, Originated Three Years before Latest Fiscal Year	72,274	31,771
Financing Receivable, Originated Four Years before Latest Fiscal Year	29,215	55,338
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	456,899	417,779
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss and Fee	864,796	884,690
Pinnacle Public Finance [Member] | Pass
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	16,152	170,919
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	158,857	133,988
Financing Receivable, Originated Two Years before Latest Fiscal Year	131,399	74,895
Financing Receivable, Originated Three Years before Latest Fiscal Year	72,274	31,771
Financing Receivable, Originated Four Years before Latest Fiscal Year	29,215	55,338
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	456,899	417,779
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss and Fee	864,796	884,690
Mortgage warehouse lending [Member]
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Financing Receivable, Revolving	456,385	432,663
Financing Receivable, before Allowance for Credit Loss and Fee	456,385	432,663
Mortgage warehouse lending [Member] | Pass
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Financing Receivable, Revolving	452,087	432,663
Financing Receivable, before Allowance for Credit Loss and Fee	452,087	432,663
Mortgage warehouse lending [Member] | Special mention
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, Revolving	4,298
Financing Receivable, before Allowance for Credit Loss and Fee	4,298
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	138,654	687,796
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	720,724	1,324,687
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,293,905	664,443
Financing Receivable, Originated Three Years before Latest Fiscal Year	705,899	522,855
Financing Receivable, Originated Four Years before Latest Fiscal Year	520,217	1,122,400
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,198,741	1,211,562
Financing Receivable, Revolving	260,631	285,490
Financing Receivable, before Allowance for Credit Loss and Fee	5,838,771	5,819,233
Commercial Real Estate Portfolio Segment [Member] | Pass
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	138,654	668,669
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	674,780	1,268,313
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,191,170	662,340
Financing Receivable, Originated Three Years before Latest Fiscal Year	616,671	493,675
Financing Receivable, Originated Four Years before Latest Fiscal Year	458,186	878,048
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,795,375	1,064,601
Financing Receivable, Revolving	234,279	281,584
Financing Receivable, before Allowance for Credit Loss and Fee	5,109,115	5,317,230
Commercial Real Estate Portfolio Segment [Member] | Special mention
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0	19,127
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	19,073	13,377
Financing Receivable, Originated Two Years before Latest Fiscal Year	38,869	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	33,037	57,984
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	45,521	4,912
Financing Receivable, Revolving	3,480	2,152
Financing Receivable, before Allowance for Credit Loss and Fee	139,980	97,552
Commercial Real Estate Portfolio Segment [Member] | Substandard
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	26,871	42,997
Financing Receivable, Originated Two Years before Latest Fiscal Year	63,866	2,103
Financing Receivable, Originated Three Years before Latest Fiscal Year	89,228	29,180
Financing Receivable, Originated Four Years before Latest Fiscal Year	28,994	186,368
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	357,845	142,049
Financing Receivable, Revolving	22,872	1,754
Financing Receivable, before Allowance for Credit Loss and Fee	589,676	404,451
Commercial and industrial Portfolio Segment
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	359,240	1,386,780
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,369,765	1,590,198
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,508,187	741,692
Financing Receivable, Originated Three Years before Latest Fiscal Year	675,851	367,334
Financing Receivable, Originated Four Years before Latest Fiscal Year	357,326	505,769
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,560,119	1,154,343
Financing Receivable, Revolving	2,831,785	3,161,608
Financing Receivable, before Allowance for Credit Loss and Fee	8,662,273	8,907,724
Commercial and industrial Portfolio Segment | Pass
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	359,240	1,382,939
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,361,500	1,423,581
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,295,020	653,730
Financing Receivable, Originated Three Years before Latest Fiscal Year	598,858	337,322
Financing Receivable, Originated Four Years before Latest Fiscal Year	339,439	431,257
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,383,135	1,040,101
Financing Receivable, Revolving	2,707,719	3,069,295
Financing Receivable, before Allowance for Credit Loss and Fee	8,044,911	8,338,225
Commercial and industrial Portfolio Segment | Special mention
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	85,306
Financing Receivable, Originated Two Years before Latest Fiscal Year	57,796	1,215
Financing Receivable, Originated Three Years before Latest Fiscal Year	22,851	13,949
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	49,526
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	55,134	22,398
Financing Receivable, Revolving	77,741	47,680
Financing Receivable, before Allowance for Credit Loss and Fee	213,522	220,074
Commercial and industrial Portfolio Segment | Substandard
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0	3,841
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	8,265	70,731
Financing Receivable, Originated Two Years before Latest Fiscal Year	148,115	86,747
Financing Receivable, Originated Three Years before Latest Fiscal Year	54,142	16,063
Financing Receivable, Originated Four Years before Latest Fiscal Year	17,887	20,757
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	118,475	91,844
Financing Receivable, Revolving	46,325	44,633
Financing Receivable, before Allowance for Credit Loss and Fee	393,209	334,616
Commercial and industrial Portfolio Segment | Doubtful
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	10,580
Financing Receivable, Originated Two Years before Latest Fiscal Year	7,256	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	4,229
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,375	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss and Fee	10,631	14,809
Criticized Commercial Portfolio Segment
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	1,421,262	1,137,109
Criticized Commercial Portfolio Segment | Special mention
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	357,800	319,905
Criticized Commercial Portfolio Segment | Substandard
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	966,129	711,266
Criticized Commercial Portfolio Segment | Substandard Non-Accruing
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	83,511	86,903
Criticized Commercial Portfolio Segment | Doubtful
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	13,822	19,035
Bridge - franchise and equipment finance
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0	6,569
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	6,374	47,615
Financing Receivable, Originated Two Years before Latest Fiscal Year	46,344	77,189
Financing Receivable, Originated Three Years before Latest Fiscal Year	72,983	47,980
Financing Receivable, Originated Four Years before Latest Fiscal Year	46,385	103,944
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	174,889	96,849
Financing Receivable, Revolving	128	201
Financing Receivable, before Allowance for Credit Loss and Fee	347,103	380,347
Bridge - franchise and equipment finance | Pass
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0	6,569
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	6,374	32,656
Financing Receivable, Originated Two Years before Latest Fiscal Year	31,690	74,170
Financing Receivable, Originated Three Years before Latest Fiscal Year	70,206	44,698
Financing Receivable, Originated Four Years before Latest Fiscal Year	43,233	76,144
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	125,526	80,302
Financing Receivable, Revolving	128	201
Financing Receivable, before Allowance for Credit Loss and Fee	277,157	314,740
Bridge - franchise and equipment finance | Special mention
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year		0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0
Financing Receivable, Originated Two Years before Latest Fiscal Year		0
Financing Receivable, Originated Three Years before Latest Fiscal Year		2,279
Financing Receivable, Originated Four Years before Latest Fiscal Year		0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0
Financing Receivable, Revolving		0
Financing Receivable, before Allowance for Credit Loss and Fee		2,279
Bridge - franchise and equipment finance | Substandard
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	14,959
Financing Receivable, Originated Two Years before Latest Fiscal Year	14,654	3,019
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,777	1,003
Financing Receivable, Originated Four Years before Latest Fiscal Year	3,152	23,574
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	46,172	16,547
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss and Fee	66,755	59,102
Bridge - franchise and equipment finance | Doubtful
Financing Receivable Recorded Investment [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	4,226
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,191	0
Financing Receivable, Revolving	0	0
Financing Receivable, before Allowance for Credit Loss and Fee	$ 3,191	$ 4,226

Loans and Allowance for Credi_9

Loans and Allowance for Credit Losses (Schedule of Credit Exposure for Loans Based on Original LTV and FICO Score) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 24,226,300	$ 24,633,684
1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	45,089	365,323
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	365,339	1,126,812
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,105,401	2,974,506
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,929,818	860,121
Financing Receivable, Originated Four Years before Latest Fiscal Year	845,124	297,728
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,524,094	1,278,523
Financing Receivable, before Allowance for Credit Loss and Fee	6,814,865	6,903,013
FICO, 760 or greater | 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	32,918	253,774
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	262,572	810,150
Financing Receivable, Originated Two Years before Latest Fiscal Year	799,670	2,378,572
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,340,757	696,363
Financing Receivable, Originated Four Years before Latest Fiscal Year	671,972	203,966
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,071,738	893,290
Financing Receivable, before Allowance for Credit Loss and Fee	5,179,627	5,236,115
FICO, 720 to 759 | 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	9,389	78,882
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	70,612	194,135
Financing Receivable, Originated Two Years before Latest Fiscal Year	188,024	392,179
Financing Receivable, Originated Three Years before Latest Fiscal Year	375,750	99,412
Financing Receivable, Originated Four Years before Latest Fiscal Year	105,189	50,984
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	207,386	210,663
Financing Receivable, before Allowance for Credit Loss and Fee	956,350	1,026,255
FICO, 719 or less | 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	2,782	32,667
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	32,155	122,527
Financing Receivable, Originated Two Years before Latest Fiscal Year	117,707	203,755
Financing Receivable, Originated Three Years before Latest Fiscal Year	213,311	64,346
Financing Receivable, Originated Four Years before Latest Fiscal Year	67,963	42,778
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	244,970	174,570
Financing Receivable, before Allowance for Credit Loss and Fee	678,888	640,643
Less than 61% [Member] | 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	3,734	63,117
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	63,498	260,403
Financing Receivable, Originated Two Years before Latest Fiscal Year	256,645	1,211,101
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,190,472	326,771
Financing Receivable, Originated Four Years before Latest Fiscal Year	321,803	72,219
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	484,128	428,451
Financing Receivable, before Allowance for Credit Loss and Fee	2,320,280	2,362,062
61% - 70% [Member] | 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	8,295	67,146
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	67,262	280,602
Financing Receivable, Originated Two Years before Latest Fiscal Year	276,274	813,682
Financing Receivable, Originated Three Years before Latest Fiscal Year	804,309	221,091
Financing Receivable, Originated Four Years before Latest Fiscal Year	216,282	71,652
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	351,977	293,784
Financing Receivable, before Allowance for Credit Loss and Fee	1,724,399	1,747,957
71% - 80% [Member] | 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	32,772	235,060
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	234,579	583,724
Financing Receivable, Originated Two Years before Latest Fiscal Year	570,411	915,166
Financing Receivable, Originated Three Years before Latest Fiscal Year	900,665	312,188
Financing Receivable, Originated Four Years before Latest Fiscal Year	306,968	148,483
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	646,898	519,699
Financing Receivable, before Allowance for Credit Loss and Fee	2,692,293	2,714,320
More than 80% [Member] | 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	288	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	2,083
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,071	34,557
Financing Receivable, Originated Three Years before Latest Fiscal Year	34,372	71
Financing Receivable, Originated Four Years before Latest Fiscal Year	71	5,374
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	41,091	36,589
Financing Receivable, before Allowance for Credit Loss and Fee	77,893	78,674
30 - 59 Days Past Due
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	180,851	207,256
30 - 59 Days Past Due | 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0	2,200
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,033	1,785
Financing Receivable, Originated Two Years before Latest Fiscal Year	5,986	7,201
Financing Receivable, Originated Three Years before Latest Fiscal Year	5,444	5,745
Financing Receivable, Originated Four Years before Latest Fiscal Year	5,651	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	17,067	14,527
Financing Receivable, before Allowance for Credit Loss and Fee	36,181	31,458
60 - 89 Days Past Due
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	54,655	75,877
60 - 89 Days Past Due | 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	2,116
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,058	1,465
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	143
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	221	2,728
Financing Receivable, before Allowance for Credit Loss and Fee	1,279	6,452
90 Days or More Past Due
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	326,973	334,463
90 Days or More Past Due | 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	5,872
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,505	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	897	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	1,439
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	11,213	5,580
Financing Receivable, before Allowance for Credit Loss and Fee	$ 16,615	$ 12,891

Loans and Allowance for Cred_10

Loans and Allowance for Credit Losses (Schedule of Financing Receivables Past Due) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 24,226,300	$ 24,633,684
1-4 single family residential
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	6,814,865	6,903,013
Financing Receivable, Originated in Current Fiscal Year	45,089	365,323
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	365,339	1,126,812
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,105,401	2,974,506
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,929,818	860,121
Financing Receivable, Originated Four Years before Latest Fiscal Year	845,124	297,728
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,524,094	1,278,523
US Government Agency Insured Loans
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	1,242,107	1,306,014
Pinnacle Public Finance [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	864,796	884,690
Financing Receivable, Originated in Current Fiscal Year	16,152	170,919
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	158,857	133,988
Financing Receivable, Originated Two Years before Latest Fiscal Year	131,399	74,895
Financing Receivable, Originated Three Years before Latest Fiscal Year	72,274	31,771
Financing Receivable, Originated Four Years before Latest Fiscal Year	29,215	55,338
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	456,899	417,779
Mortgage warehouse lending [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	456,385	432,663
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Commercial and industrial Portfolio Segment
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	8,662,273	8,907,724
Financing Receivable, Originated in Current Fiscal Year	359,240	1,386,780
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,369,765	1,590,198
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,508,187	741,692
Financing Receivable, Originated Three Years before Latest Fiscal Year	675,851	367,334
Financing Receivable, Originated Four Years before Latest Fiscal Year	357,326	505,769
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,560,119	1,154,343
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	5,838,771	5,819,233
Financing Receivable, Originated in Current Fiscal Year	138,654	687,796
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	720,724	1,324,687
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,293,905	664,443
Financing Receivable, Originated Three Years before Latest Fiscal Year	705,899	522,855
Financing Receivable, Originated Four Years before Latest Fiscal Year	520,217	1,122,400
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,198,741	1,211,562
Bridge - franchise and equipment finance
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	347,103	380,347
Financing Receivable, Originated in Current Fiscal Year	0	6,569
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	6,374	47,615
Financing Receivable, Originated Two Years before Latest Fiscal Year	46,344	77,189
Financing Receivable, Originated Three Years before Latest Fiscal Year	72,983	47,980
Financing Receivable, Originated Four Years before Latest Fiscal Year	46,385	103,944
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	174,889	96,849
Current
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	23,663,821	24,016,088
Current | 1-4 single family residential
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	6,760,790	6,852,212
Financing Receivable, Originated in Current Fiscal Year	45,089	363,123
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	363,306	1,117,039
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,093,852	2,965,840
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,923,477	854,376
Financing Receivable, Originated Four Years before Latest Fiscal Year	839,473	296,146
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,495,593	1,255,688
Current | US Government Agency Insured Loans
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	805,859	835,282
Current | Pinnacle Public Finance [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	864,796	884,690
Current | Mortgage warehouse lending [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	456,385	432,663
Current | Commercial and industrial Portfolio Segment
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	8,603,178	8,851,585
Current | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	5,827,723	5,779,309
Current | Bridge - franchise and equipment finance
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	345,090	380,347
30 - 59 Days Past Due
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	180,851	207,256
30 - 59 Days Past Due | 1-4 single family residential
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	36,181	31,458
Financing Receivable, Originated in Current Fiscal Year	0	2,200
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,033	1,785
Financing Receivable, Originated Two Years before Latest Fiscal Year	5,986	7,201
Financing Receivable, Originated Three Years before Latest Fiscal Year	5,444	5,745
Financing Receivable, Originated Four Years before Latest Fiscal Year	5,651	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	17,067	14,527
30 - 59 Days Past Due | US Government Agency Insured Loans
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	127,661	131,652
30 - 59 Days Past Due | Pinnacle Public Finance [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	0	0
30 - 59 Days Past Due | Mortgage warehouse lending [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	0	0
30 - 59 Days Past Due | Commercial and industrial Portfolio Segment
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	13,084	16,228
30 - 59 Days Past Due | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	2,332	27,918
30 - 59 Days Past Due | Bridge - franchise and equipment finance
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	1,593	0
60 - 89 Days Past Due
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	54,655	75,877
60 - 89 Days Past Due | 1-4 single family residential
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	1,279	6,452
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	2,116
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,058	1,465
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	143
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	221	2,728
60 - 89 Days Past Due | US Government Agency Insured Loans
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	53,216	61,942
60 - 89 Days Past Due | Pinnacle Public Finance [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	0	0
60 - 89 Days Past Due | Mortgage warehouse lending [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	0	0
60 - 89 Days Past Due | Commercial and industrial Portfolio Segment
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	160	5,536
60 - 89 Days Past Due | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	0	1,947
60 - 89 Days Past Due | Bridge - franchise and equipment finance
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	0	0
90 Days or More Past Due
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	326,973	334,463
90 Days or More Past Due | 1-4 single family residential
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	16,615	12,891
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	5,872
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,505	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	897	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	1,439
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	11,213	5,580
90 Days or More Past Due | US Government Agency Insured Loans
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	255,371	277,138
90 Days or More Past Due | Pinnacle Public Finance [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	0	0
90 Days or More Past Due | Mortgage warehouse lending [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	0	0
90 Days or More Past Due | Commercial and industrial Portfolio Segment
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	45,851	34,375
90 Days or More Past Due | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	8,716	10,059
90 Days or More Past Due | Bridge - franchise and equipment finance
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 420	$ 0

Loans and Allowance for Cred_11

Loans and Allowance for Credit Losses (Finance Receivable, Nonaccrual) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Financing Receivable Investment Past Due [Line Items]
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest	$ 115,180		$ 126,451
Recorded Investment, With no specific allowance recorded	18,499		23,821
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	2,500	$ 1,900
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable Investment Past Due [Line Items]
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest	12,258		13,727
Recorded Investment, With no specific allowance recorded	1,891		1,947
Residential Portfolio Segment [Member]
Financing Receivable Investment Past Due [Line Items]
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest	17,847		20,513
Recorded Investment, With no specific allowance recorded	0		0
Commercial and industrial Portfolio Segment
Financing Receivable Investment Past Due [Line Items]
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest	62,445		68,533
Recorded Investment, With no specific allowance recorded	9,303		14,078
Bridge - franchise and equipment finance
Financing Receivable Investment Past Due [Line Items]
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest	22,630		23,678
Recorded Investment, With no specific allowance recorded	$ 7,305		$ 7,796

Loans and Allowance for Cred_12

Loans and Allowance for Credit Losses (Schedule of Collateral Dependent Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss	$ 78,584	$ 71,463
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss	10,995	11,574
Secured Debt
Financing Receivable, Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss	64,036	56,073
Commercial Real Estate | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss	10,995	11,574
Commercial and industrial Portfolio Segment
Financing Receivable, Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss	45,379	36,401
Commercial and industrial Portfolio Segment | Commercial and industrial
Financing Receivable, Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss	34,711	25,821
Bridge - franchise and equipment finance
Financing Receivable, Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss	22,210	23,488
Bridge - franchise and equipment finance | Bridge - franchise and equipment finance
Financing Receivable, Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss	$ 18,330	$ 18,678

Loans and Allowance for Cred_13

Loans and Allowance for Credit Losses Loans and Allowance for Credit Losses (Schedule of Loan Modifications) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 27,303	$ 45,025
Amortized cost basis	74,475	45,025
Current
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	40,061	28,030
30 - 59 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	9,001	11,083
60 - 89 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	4,439	4,683
90 Days or More Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	20,974	1,229
1-4 single family residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification		766
Amortized cost basis	74	766
1-4 single family residential | Current
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	74	766
1-4 single family residential | 30 - 59 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
1-4 single family residential | 60 - 89 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
1-4 single family residential | 90 Days or More Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
US Government Agency Insured Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	17,045	39,341
Amortized cost basis	51,537	39,341
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	10,262	5,912
US Government Agency Insured Loans | Current
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	17,123	22,346
US Government Agency Insured Loans | 30 - 59 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	9,001	11,083
US Government Agency Insured Loans | 60 - 89 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	4,439	4,683
US Government Agency Insured Loans | 90 Days or More Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	20,974	1,229
Commercial and industrial Portfolio Segment
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	1,772	4,918
Amortized cost basis	3,953	4,918
Commercial and industrial Portfolio Segment | Current
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	3,953	4,918
Commercial and industrial Portfolio Segment | 30 - 59 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Commercial and industrial Portfolio Segment | 60 - 89 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Commercial and industrial Portfolio Segment | 90 Days or More Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Bridge - franchise and equipment finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	10,425
Bridge - franchise and equipment finance | Current
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	10,425
Bridge - franchise and equipment finance | 30 - 59 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Bridge - franchise and equipment finance | 60 - 89 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Bridge - franchise and equipment finance | 90 Days or More Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	8,486
Amortized cost basis	8,486
Commercial Real Estate Portfolio Segment [Member] | Current
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	8,486
Commercial Real Estate Portfolio Segment [Member] | 30 - 59 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Commercial Real Estate Portfolio Segment [Member] | 60 - 89 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Commercial Real Estate Portfolio Segment [Member] | 90 Days or More Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0
Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	0	875
Interest Rate Reduction | 1-4 single family residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification		$ 766
Percentage to total financing receivables		0%
Interest Rate Reduction | 1-4 single family residential | Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Weighted average interest rate decrease from modification		3.80%
Interest Rate Reduction | 1-4 single family residential | Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
Weighted average interest rate decrease from modification		3.10%
Interest Rate Reduction | US Government Agency Insured Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 0	$ 109
Percentage to total financing receivables	0%	0%
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 0	$ 109
Interest Rate Reduction | Government Insured Residential | Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Weighted average interest rate decrease from modification		4.80%
Interest Rate Reduction | Government Insured Residential | Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
Weighted average interest rate decrease from modification		3.80%
Interest Rate Reduction | Commercial and industrial Portfolio Segment
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 0	$ 0
Percentage to total financing receivables	0%	0%
Interest Rate Reduction | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 0
Percentage to total financing receivables	0%
Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 24,651	$ 41,838
Term Extension | 1-4 single family residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification		$ 0
Percentage to total financing receivables		0%
Term Extension | US Government Agency Insured Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 14,422	$ 36,920
Percentage to total financing receivables	1%	2%
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 10,262	$ 5,070
Term Extension | Government Insured Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Weighted average term increase from modifciation	11 years 2 months 12 days	9 years 7 months 6 days
Term Extension | Commercial and industrial Portfolio Segment
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 1,743	$ 4,918
Percentage to total financing receivables	0%	0%
Weighted average term increase from modifciation	3 months 18 days	8 months 12 days
Term Extension | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 8,486
Percentage to total financing receivables	0%
Weighted average term increase from modifciation	2 months 12 days
Combination - Interest Rate Reduction and Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 2,652	$ 2,312
Combination - Interest Rate Reduction and Term Extension | 1-4 single family residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification		$ 0
Percentage to total financing receivables		0%
Combination - Interest Rate Reduction and Term Extension | US Government Agency Insured Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 2,623	$ 2,312
Percentage to total financing receivables	0%	0%
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 0	$ 733
Combination - Interest Rate Reduction and Term Extension | Government Insured Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Weighted average term increase from modifciation	3 years 8 months 12 days	6 years 10 months 24 days
Combination - Interest Rate Reduction and Term Extension | Government Insured Residential | Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Weighted average interest rate decrease from modification	6.80%	5.80%
Combination - Interest Rate Reduction and Term Extension | Government Insured Residential | Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
Weighted average interest rate decrease from modification	6.40%	4.90%
Combination - Interest Rate Reduction and Term Extension | Commercial and industrial Portfolio Segment
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 29	$ 0
Percentage to total financing receivables	0%	0%
Weighted average term increase from modifciation	2 years 2 months 12 days
Combination - Interest Rate Reduction and Term Extension | Commercial and industrial Portfolio Segment | Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Weighted average interest rate decrease from modification	21.20%
Combination - Interest Rate Reduction and Term Extension | Commercial and industrial Portfolio Segment | Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
Weighted average interest rate decrease from modification	5%
Combination - Interest Rate Reduction and Term Extension | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 0
Percentage to total financing receivables	0%

Income Taxes Income Taxes (Narr

Income Taxes Income Taxes (Narrative) (Details)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Tax Examination [Line Items]
Effective Income Tax Rate Reconciliation, Percent	28.60%	26.40%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21%	21%

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities (Schedule of Derivatives Designated as Hedging Instruments) (Details) - Designated as Hedging Instrument - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Derivative [Line Items]
Notional Amount	$ 3,280,000	$ 3,640,000
Asset	9,647	10,241
Liability	(3,190)	(1,048)
Cash Flow Hedging | Interest Rate Swap
Derivative [Line Items]
Notional Amount	2,855,000	3,215,000
Asset	0	0
Liability	(3,051)	(1,048)
Cash Flow Hedging | interest rate caps purchased, indexed to fed funds effective rate
Derivative [Line Items]
Notional Amount	200,000	200,000
Asset	9,647	10,157
Liability	0	0
Cash Flow Hedging | Interest rate collar
Derivative [Line Items]
Notional Amount	125,000	125,000
Asset	0	84
Liability	(139)	0
Fair Value Hedging | Pay-fixed interest rate swaps
Derivative [Line Items]
Notional Amount	100,000	100,000
Asset	0	0
Liability	$ 0	$ 0

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities Derivative and Hedging Activities - Amount of loss reclassified from AOCI into Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	$ 19,822	$ 12,154
Interest expense on borrowings
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]	Borrowings	Borrowings
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	$ 15,712	$ 7,497
Interest expense on deposits
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]	Deposits	Deposits
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	$ 4,926	$ 5,049
Interest income on loans
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]	Loans	Loans
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	$ (816)	$ (392)

Derivatives and Hedging Activ_5

Derivatives and Hedging Activities Derivative and Hedging Activities - Carrying Value of Hedged Item and Cumulative Fair Value Adjustments (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Closed Portfolio and Beneficial Interest, Last-of-Layer, Amortized Cost	$ 976,000	$ 992,000
Hedged Asset, Statement of Financial Position [Extensible Enumeration]	Loans
Hedged Asset, Fair Value Hedge	$ 100,000	100,000
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)	$ (1,022)	$ (1,656)

Derivatives and Hedging Activ_6

Derivatives and Hedging Activities (Schedule of Derivatives not Designated as Hedging Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Derivative [Line Items]
Risk Participation Agreement, Purchased, Derivative, Liability, FV	$ 0	$ 0
Risk Participation Agreement, Purchased, Derivative, Asset, FV	24	20
Risk Participation Agreement, Purchased, Derivative, Notional Amount	78,838	77,846
Risk Participation Agreement, Sold, Derivative, Liability, FV	(292)	(237)
Risk Participation Agreement, Sold, Derivative, Asset, FV	0	0
Risk Participation Agreement, Sold, Derivative, Notional Amount	335,868	284,910
Derivatives not designated as hedges
Derivative [Line Items]
Notional Amount	5,001,010	4,827,602
Asset	102,587	95,437
Liability	(102,855)	(96,118)
Derivatives not designated as hedges | Pay-fixed forward-starting interest rate swaps
Derivative [Line Items]
Notional Amount	2,227,542	2,166,813
Asset	93,495	76,793
Liability	(6,958)	(16,702)
Derivatives not designated as hedges | Pay-variable interest rate swaps
Derivative [Line Items]
Notional Amount	2,227,542	2,166,813
Asset	6,958	16,702
Liability	(93,495)	(77,257)
Derivatives not designated as hedges | Interest Rate Cap
Derivative [Line Items]
Notional Amount	65,610	65,610
Asset	2,110	1,922
Liability	0	0
Derivatives not designated as hedges | Interest Rate Caps Sold
Derivative [Line Items]
Notional Amount	65,610	65,610
Asset	0	0
Liability	$ (2,110)	$ (1,922)

Derivatives and Hedging Activ_7

Derivatives and Hedging Activities (Interest Rate Swaps Subject to Master Netting Agreements) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Gross Amounts Recognized, Derivative assets	$ 105,252	$ 88,956
Gross Amounts Recognized, Derivative liabilities	(10,148)	(17,750)
Gross Amounts Recognized, Derivative assets and liabilities	(95,104)	(71,206)
Gross Amounts Offset in Balance Sheet, Derivative assets	0	0
Gross Amounts Offset in Balance Sheet, Derivative liabilities	0	0
Gross Amounts Offset in Balance Sheet, Derivative assets and liabilities	0	0
Net Amounts Presented in Balance Sheet, Derivative assets	105,252	88,956
Net Amounts Presented in Balance Sheet, Derivative liabilities	(10,148)	(17,750)
Derivative Asset (Liability), Fair Value, Amount Not Offset Against Collateral	95,104	71,206
Gross Amounts Not Offset in Balance Sheet
Derivative Instruments, Derivative assets	(10,148)	(15,154)
Derivative Instruments, Derivative liabilities	10,148	15,154
Derivative Instruments, Derivative assets and liabilities	0	0
Collateral Pledged, Derivative assets	(94,946)	(73,730)
Collateral Pledged, Derivative liabilities	0	2,596
Collateral Pledged, Derivative assets and liabilities	(94,946)	(71,134)
Net Amount, Derivative assets	158	72
Net Amount, Derivative liabilities	0	0
Net Amount, Derivative assets and liabilities	$ 158	$ 72

Derivatives and Hedging Activ_8

Derivatives and Hedging Activities (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Amount expected to be reclassified from AOCI into income	$ (39,400)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	6,536	$ (11,159)
Reclassification adjustment for net gains realized in income	$ (14,668)	$ (8,994)

Stockholders' Equity (Changes i

Stockholders' Equity (Changes in Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Unrealized gains (losses) on investment securities available for sale:
Net unrealized holding gain (loss) arising during the period, Before Tax	$ (36,400)	$ (101,265)
Amounts reclassified to gain on investment securities available for sale, net, Before Tax	(28)	752
Net change in unrealized gains on securities available for sale, Before Tax	36,428	100,513
Net unrealized holding gain (loss) arising during the period, Tax Effect	9,464	26,329
Amounts reclassified to gain on investment securities available for sale, net, Tax Effect	(7)	196
Net change in unrealized gains on securities available for sale, Tax Effect	(9,471)	(26,133)
Net unrealized holding gain (loss) arising during the period, Net of Tax	26,936	74,936
Amounts reclassified to gain on investment securities available for sale, net, Net of Tax	21	(556)
Net change in unrealized gains (losses) on securities available for sale	26,957	74,380
Unrealized losses on derivative instruments:
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax	28,654	(2,926)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax	8,832	(15,080)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax	(7,450)	761
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax	2,296	(3,921)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax	21,204	(2,165)
Reclassification adjustment for net gains realized in income	14,668	8,994
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	6,536	(11,159)
Other comprehensive income (loss), Before Tax	45,260	85,433
Other comprehensive income (loss), Tax Effect	(11,767)	(22,212)
Other comprehensive income	33,493	63,221
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized holding gain (loss) arising during the period, Before Tax	36,400	101,265
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax	(28)	752
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Tax	36,428	100,513
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, Tax	9,464	26,329
Amounts reclassified to gain on investment securities available for sale, net, Tax Effect	(7)	196
Other Comprehensive Income (Loss), Securities, Available-for-sale, Tax	9,471	26,133
Net unrealized holding gains arising during the period	26,936	74,936
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	(21)	556
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax	26,957	74,380
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax	28,654	(2,926)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax	7,450	(761)
Net unrealized holding gains (losses) arising during the period	21,204	(2,165)
Reclassification adjustment for net gains realized in income	14,668	8,994
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax	8,832	(15,080)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax	2,296	(3,921)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	6,536	(11,159)
Other Comprehensive Income (Loss), before Tax	45,260	85,433
Other Comprehensive Income (Loss), Tax	11,767	22,212
Other Comprehensive Income (Loss), Net of Tax	33,493	63,221
Interest expense on deposits
Unrealized losses on derivative instruments:
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	4,926	5,049
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	1,281	1,313
Reclassification adjustment for net gains realized in income	3,645	3,736
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	4,926	5,049
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	1,281	1,313
Reclassification adjustment for net gains realized in income	3,645	3,736
Interest expense on borrowings
Unrealized losses on derivative instruments:
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	15,712	7,497
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	4,085	1,949
Reclassification adjustment for net gains realized in income	11,627	5,548
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	15,712	7,497
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	4,085	1,949
Reclassification adjustment for net gains realized in income	11,627	5,548
Interest income on loans
Unrealized losses on derivative instruments:
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	(816)	(392)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	(212)	(102)
Reclassification adjustment for net gains realized in income	(604)	(290)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	(816)	(392)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	(212)	(102)
Reclassification adjustment for net gains realized in income	(604)	(290)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Unrealized losses on derivative instruments:
Other comprehensive income	6,536	(11,159)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax	$ 6,536	$ (11,159)

Stockholders' Equity (Categorie

Stockholders' Equity (Categories of Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other comprehensive income, Beginning Balance	$ (357,421)
Other comprehensive income	33,493	$ 63,221
Other comprehensive income, Ending Balance	(323,928)
Unrealized Gains on Investment Securities Available for Sale
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other comprehensive income, Beginning Balance	(395,746)	(498,911)
Other comprehensive income	26,957	74,380
Other comprehensive income, Ending Balance	(368,789)	(424,531)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other comprehensive income, Beginning Balance	38,325	61,006
Other comprehensive income	6,536	(11,159)
Other comprehensive income, Ending Balance	44,861	49,847
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other comprehensive income, Beginning Balance	(357,421)	(437,905)
Other comprehensive income	33,493	63,221
Other comprehensive income, Ending Balance	$ (323,928)	$ (374,684)

Fair Value Measurements (Assets

Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 9,027,193	$ 8,973,032
Financial and Nonfinancial Liabilities, Fair Value Disclosure	(106,045)	(97,166)
Derivative Financial Instruments, Liabilities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	(106,045)	(97,166)
U.S. Treasury securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	130,290	130,592
U.S. Government agency and sponsored enterprise residential MBS
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	2,161,292	1,924,207
U.S. Government agency and sponsored enterprise commercial MBS
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	494,207	497,859
Private label residential MBS and CMOs
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	2,250,219	2,295,730
Private label commercial MBS
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	2,122,271	2,198,743
Single family real estate-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	341,362	366,255
Collateralized loan obligations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	1,076,492	1,112,824
Non-mortgage asset-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	100,124	102,780
State and municipal obligations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	106,713	102,618
SBA securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	98,465	103,024
Marketable equity securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	33,524	32,722
Derivative Financial Instruments, Assets [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	112,234	105,678
Fair Value, Inputs, Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	163,814	163,314
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 | Derivative Financial Instruments, Liabilities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 | U.S. Treasury securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	130,290	130,592
Fair Value, Inputs, Level 1 | U.S. Government agency and sponsored enterprise residential MBS
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 | U.S. Government agency and sponsored enterprise commercial MBS
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 | Private label residential MBS and CMOs
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 | Private label commercial MBS
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 | Single family real estate-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 | Collateralized loan obligations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 | Non-mortgage asset-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 | State and municipal obligations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 | SBA securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 | Marketable equity securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	33,524	32,722
Fair Value, Inputs, Level 1 | Derivative Financial Instruments, Assets [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	8,863,379	8,809,718
Financial and Nonfinancial Liabilities, Fair Value Disclosure	(106,045)	(97,166)
Fair Value, Inputs, Level 2 | Derivative Financial Instruments, Liabilities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Financial and Nonfinancial Liabilities, Fair Value Disclosure	(106,045)	(97,166)
Fair Value, Inputs, Level 2 | U.S. Treasury securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 | U.S. Government agency and sponsored enterprise residential MBS
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	2,161,292	1,924,207
Fair Value, Inputs, Level 2 | U.S. Government agency and sponsored enterprise commercial MBS
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	494,207	497,859
Fair Value, Inputs, Level 2 | Private label residential MBS and CMOs
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	2,250,219	2,295,730
Fair Value, Inputs, Level 2 | Private label commercial MBS
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	2,122,271	2,198,743
Fair Value, Inputs, Level 2 | Single family real estate-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	341,362	366,255
Fair Value, Inputs, Level 2 | Collateralized loan obligations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	1,076,492	1,112,824
Fair Value, Inputs, Level 2 | Non-mortgage asset-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	100,124	102,780
Fair Value, Inputs, Level 2 | State and municipal obligations
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	106,713	102,618
Fair Value, Inputs, Level 2 | SBA securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	98,465	103,024
Fair Value, Inputs, Level 2 | Marketable equity securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 | Derivative Financial Instruments, Assets [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 112,234	$ 105,678

Fair Value Measurements (Asse_2

Fair Value Measurements (Assets for which Nonrecurring Changes in Fair Value have been Recorded) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 9,027,193	$ 8,973,032
Fair Value, Inputs, Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	53,280	50,914
Impaired Loans [Member] | Fair Value, Inputs, Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	52,020	50,885
OREO and Repossessed Assets [Member] | Fair Value, Inputs, Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 1,260	$ 29

Fair Value Measurements (Carryi

Fair Value Measurements (Carrying Value and Fair Value of Financial Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Assets:
Investment securities	$ 8,924,912	$ 8,877,281
Non-marketable equity securities	252,609	310,084
Liabilities:
Time deposits	5,115,703	5,163,995
Fair Value, Inputs, Level 1
Assets:
Cash and cash equivalents	421,216	588,283
Fair Value, Inputs, Level 2
Assets:
Non-marketable equity securities	$ 252,609	$ 310,084
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Liabilities:
Demand, savings and money market deposits	$ 21,911,661	$ 21,374,483
Time deposits	5,079,472	5,133,119
FHLB advances	3,904,870	5,115,637
Notes and other borrowings	$ 677,947	$ 676,077
Derivative liabilities	Other liabilities	Other liabilities
Fair Value, Inputs, Level 3
Assets:
Loans, net	$ 22,696,690	$ 23,075,192
Carrying Value
Assets:
Cash and cash equivalents	421,216	588,283
Investment securities	8,924,959	8,877,354
Non-marketable equity securities	252,609	310,084
Loans, net	$ 24,008,744	$ 24,430,995
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Liabilities:
Demand, savings and money market deposits	$ 21,911,661	$ 21,374,483
Time deposits	5,115,703	5,163,995
FHLB advances	3,905,000	5,115,000
Notes and other borrowings	$ 708,978	$ 708,973
Derivative liabilities	Other liabilities	Other liabilities

Commitments and Contingencies C

Commitments and Contingencies Commitments (Details) $ in Thousands	Mar. 31, 2024 USD ($)
Lending related commitments [Line Items]
Unused Commitments to Extend Credit	$ 5,410,980
Commitments to fund loans
Lending related commitments [Line Items]
Unused Commitments to Extend Credit	200,034
Unfunded commitments under lines of credit
Lending related commitments [Line Items]
Unused Commitments to Extend Credit	5,068,914
Commercial and standby letters of credit
Lending related commitments [Line Items]
Unused Commitments to Extend Credit	$ 142,032

Deposits (Summary of Average Ba

Deposits (Summary of Average Balances and Weighted Average Rates Paid on Deposits) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Demand deposits:
Non-interest bearing, average balance	$ 6,560,926	$ 7,458,221
Non-interest bearing, average rate (in Percent)	0%	0%
Interest bearing, average balance	$ 3,584,363	$ 2,283,505
Interest-bearing, average rate (in Percent)	3.76%	1.87%
Savings and Money Market, average balance	$ 11,234,259	$ 12,145,922
Weighted Average Rate Domestic Deposit Savings and Money Market	4.25%	3.06%
Time, average balance	$ 5,231,178	$ 4,526,480
Weighted Average Rate Domestic Deposit, Time Deposits	4.45%	2.81%
Deposits, average balance	$ 26,610,726	$ 26,414,128
Weighted Average Rate Domestic Deposits	3.18%	2.05%

Deposits (Schedule of Maturitie

Deposits (Schedule of Maturities of Time Deposits) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Maturities of Time Deposits [Abstract]
Time Deposit Maturities, Next Twelve Months	$ 4,325,792
Time Deposit Maturities, Year Two	466,368
Time Deposit Maturities, Year Three	322,827
Time Deposit Maturities, Year Four	547
Time Deposit Maturities, after Year Five	164
Time Deposit Maturities, after Year Five	5
Time	$ 5,115,703	$ 5,163,995

Deposits (Schedule of Interest

Deposits (Schedule of Interest Expense on Deposits) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Deposits [Abstract]
Interest Expense, Demand Deposit Accounts	$ 33,507	$ 10,545
Interest Expense, Money Market and Savings Deposits	118,639	91,724
Interest Expense, Time Deposits	57,852	31,361
Interest Expense, Domestic Deposits	$ 209,998	$ 133,630

Deposits (Narrative) (Details)

Deposits (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Deposits [Abstract]
Noninterest Expense Commission Expense	$ 14,000	$ 8,500
Public funds deposits included in deposits	3,100,000
Interest-bearing Domestic Deposit, Brokered	$ 5,200,000