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Operating Segments (Tables)

3 Months Ended

Mar. 31, 2025

Segment Reporting [Abstract]

Summary of Operating Results by Segment

			Banking						Frost Wealth Advisors						Non-Banks						Consolidated
Three months ended:
March 31, 2025
Interest income			$	583,241					$	1,876					$	—					$	585,117
Interest expense			165,700						89						3,108						168,897
Net interest income (expense)			417,541						1,787						(3,108)						416,220
Credit loss expense			13,070						—						—						13,070
Net interest income after credit loss expense			404,471						1,787						(3,108)						403,150
Non-interest income:
Trust and investment management fees			—						43,544						(613)						42,931
Service charges on deposit accounts			28,618						3						—						28,621
Insurance commissions and fees			21,019						—						—						21,019
Interchange and card transaction fees			5,402						—						—						5,402
Other charges, commissions and fees			7,406						6,180						—						13,586
Net gain (loss) on securities transactions			(14)						—						—						(14)
Other			11,385						1,023						58						12,466
Total non-interest income			73,816						50,750						(555)						124,011
Non-interest expense:
Salaries and wages			141,092						19,369						396						160,857
Employee benefits			37,338						4,794						25						42,157
Net occupancy			29,736						3,541						—						33,277
Technology, furniture and equipment			38,557						1,508						53						40,118
Deposit insurance			7,171						13						—						7,184
Other			50,828						12,640						1,005						64,473
Total non-interest expense			304,722						41,865						1,479						348,066
Income (loss) before income taxes			173,565						10,672						(5,142)						179,095
Income tax expense (benefit)			27,526						2,241						(1,594)						28,173
Net income (loss)			146,039						8,431						(3,548)						150,922
Preferred stock dividends			—						—						1,669						1,669
Net income (loss) available to common shareholders			$	146,039					$	8,431					$	(5,217)					$	149,253
Revenues from (expenses to) external customers			$	491,357					$	52,537					$	(3,663)					$	540,231
Average assets (in millions)			$	50,846					$	70					$	9					$	50,925

			Banking						Frost Wealth Advisors						Non-Banks						Consolidated
Three months ended:
March 31, 2024
Interest income			$	583,729					$	1,771					$	—					$	585,500
Interest expense			191,924						102						3,423						195,449
Net interest income (expense)			391,805						1,669						(3,423)						390,051
Credit loss expense			13,650						—						—						13,650
Net interest income after credit loss expense			378,155						1,669						(3,423)						376,401
Non-interest income:
Trust and investment management fees			—						39,581						(496)						39,085
Service charges on deposit accounts			24,792						3						—						24,795
Insurance commissions and fees			18,296						—						—						18,296
Interchange and card transaction fees			4,474						—						—						4,474
Other charges, commissions and fees			7,125						4,935						—						12,060
Net gain (loss) on securities transactions			—						—						—						—
Other			11,693						907						67						12,667
Total non-interest income			66,380						45,426						(429)						111,377
Non-interest expense:
Salaries and wages			130,032						17,562						406						148,000
Employee benefits			31,874						4,070						26						35,970
Net occupancy			28,136						3,642						—						31,778
Technology, furniture and equipment			33,515						1,432						48						34,995
Deposit insurance			14,713						11						—						14,724
Other			48,560						11,256						934						60,750
Total non-interest expense			286,830						37,973						1,414						326,217
Income (loss) before income taxes			157,705						9,122						(5,266)						161,561
Income tax expense (benefit)			25,635						1,916						(1,680)						25,871
Net income (loss)			132,070						7,206						(3,586)						135,690
Preferred stock dividends			—						—						1,669						1,669
Net income (loss) available to common shareholders			$	132,070					$	7,206					$	(5,255)					$	134,021
Revenues from (expenses to) external customers			$	458,185					$	47,095					$	(3,852)					$	501,428
Average assets (in millions)			$	49,251					$	64					$	9					$	49,324

X

- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 25
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-25

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-30

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