Fair Value Measurements

3 Months Ended

Mar. 31, 2024

The Company uses fair value measurements to record fair value adjustments to certain financial and nonfinancial assets and liabilities and to determine fair value disclosures. Various financial instruments such as available for sale debt securities, equity securities, trading debt securities, certain investments relating to private equity activities, and derivatives are recorded at fair value on a recurring basis. Additionally, from time to time, the Company may be required to record at fair value other assets and liabilities on a nonrecurring basis, such as mortgage servicing rights and certain other investment securities. These nonrecurring fair value adjustments typically involve lower of cost or fair value accounting or write-downs of individual assets.

Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Depending on the nature of the asset or liability, the Company uses various valuation techniques and assumptions when estimating fair value. For accounting disclosure purposes, a three-level valuation hierarchy of fair value measurements has been established. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. The three levels are defined as follows:

•Level 1 – inputs to the valuation methodology are quoted prices for identical assets or liabilities in active markets.

•Level 2 – inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets and liabilities in markets that are not active, and inputs that are observable for the assets or liabilities, either directly or indirectly (such as interest rates, yield curves, and prepayment speeds).

•Level 3 – inputs to the valuation methodology are unobservable and significant to the fair value. These may be internally developed, using the Company’s best information and assumptions that a market participant would consider.

The valuation methodologies for assets and liabilities measured at fair value on a recurring and non-recurring basis are described in the Fair Value Measurements note in the Company's 2023 Annual Report on Form 10-K. There have been no significant changes in these methodologies since then.

Instruments Measured at Fair Value on a Recurring Basis

The table below presents the March 31, 2024 and December 31, 2023 carrying values of assets and liabilities measured at fair value on a recurring basis. There were no transfers among levels during the first three months of 2024 or the year ended December 31, 2023.


			Fair Value Measurements Using
(In thousands)	Total Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
March 31, 2024
Assets:
Residential mortgage loans held for sale	$	1,185	$	—	$	1,185	$	—
Available for sale debt securities:
U.S. government and federal agency obligations	750,033		750,033		—		—
Government-sponsored enterprise obligations	43,845		—		43,845		—
State and municipal obligations	1,131,695		—		1,130,739		956
Agency mortgage-backed securities	3,754,837		—		3,754,837		—
Non-agency mortgage-backed securities	1,139,113		—		1,139,113		—
Asset-backed securities	1,877,805		—		1,877,805		—
Other debt securities	444,367		—		444,367		—
Trading debt securities	56,716		—		56,716		—
Equity securities	5,864		5,864		—		—
Private equity investments	183,706		—		—		183,706
Derivatives *	94,758		—		94,617		141
Assets held in trust for deferred compensation plan	21,270		21,270		—		—
Total assets	9,505,194		777,167		8,543,224		184,803
Liabilities:
Derivatives *	38,546		—		38,440		106
Liabilities held in trust for deferred compensation plan	21,270		21,270		—		—
Total liabilities	$	59,816	$	21,270	$	38,440	$	106
December 31, 2023
Assets:
Residential mortgage loans held for sale	$	1,585	$	—	$	1,585	$	—
Available for sale debt securities:
U.S. government and federal agency obligations	816,514		816,514		—		—
Government-sponsored enterprise obligations	43,962		—		43,962		—
State and municipal obligations	1,197,419		—		1,196,472		947
Agency mortgage-backed securities	3,901,346		—		3,901,346		—
Non-agency mortgage-backed securities	1,157,898		—		1,157,898		—
Asset-backed securities	2,107,485		—		2,107,485		—
Other debt securities	460,136		—		460,136		—
Trading debt securities	28,830		—		28,830		—
Equity securities	5,723		5,723		—		—
Private equity investments	176,667		—		—		176,667
Derivatives *	116,876		—		116,710		166
Assets held in trust for deferred compensation plan	20,538		20,538		—		—
Total assets	10,034,979		842,775		9,014,424		177,780
Liabilities:
Derivatives *	37,899		—		37,704		195
Liabilities held in trust for deferred compensation plan	20,538		20,538		—		—
Total liabilities	$	58,437	$	20,538	$	37,704	$	195

* The fair value of each class of derivative is shown in Note 11.

The changes in the Company's Level 3 assets and liabilities measured at fair value on a recurring basis are summarized as follows:


	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
(In thousands)	State and Municipal Obligations		Private Equity Investments		Total
For the three months ended March 31, 2024
Balance January 1, 2024	$	947	$	176,667	$	177,614
Total gains or losses (realized/unrealized):
Included in earnings	—		7,100		7,100
Included in other comprehensive income *	9		—		9


Purchases of private equity investments	—		9,477		9,477
Sale/pay down of private equity investments	—		(9,400)		(9,400)
Capitalized interest/dividends	—		(138)		(138)


Balance at March 31, 2024	$	956	$	183,706	$	184,662
Total gains or losses for the three months included in earnings attributable to the change in unrealized gains or losses relating to assets still held at March 31, 2024	$	—	$	7,100	$	7,100
*Total gains or losses for the three months included in other comprehensive income attributable to the change in unrealized gains or losses relating to assets still held at March 31, 2024	$	9	$	—	$	9
For the three months ended March 31, 2023
Balance January 1, 2023	$	1,841	$	178,127	$	179,968
Total gains or losses (realized/unrealized):
Included in earnings	—		2,251		2,251
Included in other comprehensive income *	26		—		26
Investment securities called	(1,000)		—		(1,000)
Discount accretion	47		—		47
Purchases of private equity investments	—		10,532		10,532
Sale/pay down of private equity investments	—		(27,492)		(27,492)



Balance at March 31, 2023	$	914	$	163,418	$	164,332
Total gains or losses for the three months included in earnings attributable to the change in unrealized gains or losses relating to assets still held at March 31, 2023	$	—	$	2,251	$	2,251
*Total gains or losses for the three months included in other comprehensive income attributable to the change in unrealized gains or losses relating to assets still held at March 31, 2023	$	4	$	—	$	4

* Included in "net unrealized gains (losses) on available for sale debt securities" in the consolidated statements of comprehensive income.

Gains and losses included in earnings for the Company's Level 3 assets and liabilities in the previous table are reported in the following line items in the consolidated statements of income:


(In thousands)	Investment Securities Gains (Losses), Net
For the three months ended March 31, 2024
Total gains or losses included in earnings	$	7,100
Change in unrealized gains or losses relating to assets still held at March 31, 2024	$	7,100



For the three months ended March 31, 2023
Total gains or losses included in earnings	$	2,251
Change in unrealized gains or losses relating to assets still held at March 31, 2023	$	2,251

Level 3 Inputs

The Company's Level 3 measurements at March 31, 2024, which employ unobservable inputs that are readily quantifiable, pertain to investments in portfolio concerns held by the Company's private equity subsidiaries. Information about these inputs is presented in the table below.

Quantitative Information about Level 3 Fair Value Measurements

Weighted

Valuation Technique

Unobservable Input

Range

Average*

Private equity investments

Market comparable companies

EBITDA multiple

3.5

6.0

5.1

* Unobservable inputs were weighted by the relative fair value of the instruments.

Instruments Measured at Fair Value on a Nonrecurring Basis

For assets measured at fair value on a nonrecurring basis during the first three months of 2024 and 2023, and still held as of March 31, 2024 and 2023, the following table provides the adjustments to fair value recognized during the respective periods, the level of valuation inputs used to determine each adjustment, and the carrying value of the related individual assets or portfolios at March 31, 2024 and 2023.


			Fair Value Measurements Using
(In thousands)	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Gains (Losses) Recognized During the Three Months Ended March 31
March 31, 2024
Collateral dependent loans	$	63	$	—	$	—	$	63	$	(32)





March 31, 2023
Collateral dependent loans	$	1,819	$	—	$	—	$	1,819	$	425