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Consolidated Statements of Earnings (Unaudited) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Interest revenue [Abstract] |  |
Loans | $ 438,677 | $ 367,870
Residential mortgage loans held for sale | 923 | 979
Trading securities | 68,237 | 34,009
Investment securities | 7,829 | 8,928
Available for sale securities | 113,488 | 88,736
Fair value option securities | 195 | 3,893
Restricted equity securities | 8,858 | 5,808
Interest-bearing cash and cash equivalents | 7,005 | 6,506
Total interest revenue | 645,212 | 516,729
Interest expense [Abstract] |  |
Deposits | 242,124 | 95,274
Borrowed funds | 107,204 | 67,038
Subordinated debentures | 2,312 | 2,069
Total interest expense | 351,640 | 164,381
Net interest revenue | 293,572 | 352,348
Provision for credit losses | 8,000 | 16,000
Net interest revenue after provision for credit losses | 285,572 | 336,348
Total fees and commissions | 200,564 | 185,979
Other gains, net | 4,269 | 2,251
Loss on derivatives, net | (8,633) | (1,344)
Loss on fair value option securities, net | (305) | (2,962)
Change in fair value of mortgage servicing rights | 10,977 | (6,059)
Loss on available for sale securities, net | (45,171) | 0
Total other operating revenue | 161,701 | 177,865
Noninterest Expense [Abstract] |  |
Personnel | 202,653 | 182,145
Business promotion | 7,978 | 8,569
Professional fees and services | 12,010 | 13,048
Net occupancy and equipment | 30,293 | 28,459
FDIC and other insurance | 8,740 | 7,315
FDIC special assessment | 6,454 | 0
Data processing and communications | 45,564 | 44,802
Printing, postage and supplies | 3,997 | 3,893
Amortization of intangible assets | 3,003 | 3,391
Mortgage banking costs | 6,355 | 5,782
Other expense | 13,337 | 8,408
Total other operating expense | 340,384 | 305,812
Net income before taxes | 106,889 | 208,401
Federal and state income taxes | 23,195 | 45,905
Net income | 83,694 | 162,496
Net income (loss) attributable to non-controlling interests | (9) | 128
Net income attributable to BOK Financial Corporation shareholders | $ 83,703 | $ 162,368
Earnings Per Share [Abstract] |  |
Basic | $ 1.29 | $ 2.43
Diluted | $ 1.29 | $ 2.43
Average shares used in computation: [Abstract] |  |
Basic | 64,290,105 | 66,331,775
Diluted | 64,290,105 | 66,331,775
Dividends declared per share | $ 0.55 | $ 0.54
Brokerage and trading revenue [Member] |  |
Total fees and commissions | $ 59,179 | $ 52,396
Transaction card revenue [Member] |  |
Total fees and commissions | 25,493 | 25,621
Fiduciary and asset management revenue [Member] |  |
Total fees and commissions | 55,305 | 50,657
Deposit service charges and fees [Member] |  |
Total fees and commissions | 28,685 | 25,968
Mortgage banking revenue [Member] |  |
Total fees and commissions | 18,967 | 14,367
Other revenue [Member] |  |
Total fees and commissions | $ 12,935 | $ 16,970

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