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v3.22.2.2

Operating Segments - Summary of Operating Results by Segment (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Segment Reporting Information [Line Items] |  |  |  |
Interest Income (Expense), Net | $ 355,547 | $ 246,122 | $ 892,826 | $ 744,159
Credit loss expense | 0 | 0 | 0 | 63
Total non-interest income | 99,821 | 93,189 | 299,138 | 277,672
Total non-interest expense | 257,898 | 218,003 | 742,977 | 643,399
Income (loss) before income taxes | 197,470 | 121,308 | 448,987 | 378,369
Income tax expense (benefit) | 27,710 | 13,333 | 61,011 | 36,311
Net income (loss) | 169,760 | 107,975 | 387,976 | 342,058
Preferred stock dividends | 1,668 | 1,668 | 5,006 | 5,488
Net income (loss) available to common shareholders | 168,092 | 106,307 | 382,970 | 336,570
Revenues from (expenses to) external customers | 455,368 | 339,311 | 1,191,964 | 1,021,831
Bank |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Interest Income (Expense), Net | 356,513 | 247,381 | 895,818 | 748,036
Credit loss expense | (1) | (6) | (1) | 57
Total non-interest income | 55,994 | 51,279 | 170,097 | 154,003
Total non-interest expense | 223,193 | 185,891 | 640,775 | 548,151
Income (loss) before income taxes | 189,315 | 112,775 | 425,141 | 353,831
Income tax expense (benefit) | 26,520 | 12,029 | 57,355 | 32,811
Net income (loss) | 162,795 | 100,746 | 367,786 | 321,020
Preferred stock dividends | 0 | 0 | 0 | 0
Net income (loss) available to common shareholders | 162,795 | 100,746 | 367,786 | 321,020
Revenues from (expenses to) external customers | 412,507 | 298,660 | 1,065,915 | 902,039
Frost Wealth Advisors [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Interest Income (Expense), Net | 1,357 | 536 | 3,015 | 1,530
Credit loss expense | 1 | 6 | 1 | 6
Total non-interest income | 44,263 | 42,369 | 130,546 | 124,512
Total non-interest expense | 33,530 | 31,086 | 97,598 | 91,037
Income (loss) before income taxes | 12,089 | 11,813 | 35,962 | 34,999
Income tax expense (benefit) | 2,539 | 2,481 | 7,552 | 7,350
Net income (loss) | 9,550 | 9,332 | 28,410 | 27,649
Preferred stock dividends | 0 | 0 | 0 | 0
Net income (loss) available to common shareholders | 9,550 | 9,332 | 28,410 | 27,649
Revenues from (expenses to) external customers | 45,620 | 42,905 | 133,561 | 126,042
Non-Banks [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Interest Income (Expense), Net | (2,323) | (1,795) | (6,007) | (5,407)
Credit loss expense | 0 | 0 | 0 | 0
Total non-interest income | (436) | (459) | (1,505) | (843)
Total non-interest expense | 1,175 | 1,026 | 4,604 | 4,211
Income (loss) before income taxes | (3,934) | (3,280) | (12,116) | (10,461)
Income tax expense (benefit) | (1,349) | (1,177) | (3,896) | (3,850)
Net income (loss) | (2,585) | (2,103) | (8,220) | (6,611)
Preferred stock dividends | 1,668 | 1,668 | 5,006 | 5,488
Net income (loss) available to common shareholders | (4,253) | (3,771) | (13,226) | (12,099)
Revenues from (expenses to) external customers | $ (2,759) | $ (2,254) | $ (7,512) | $ (6,250)

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