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Employee Benefits | 12 Months Ended
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Dec. 31, 2023
Retirement Benefits [Abstract] |
Employee Benefits [Text Block] | Employee Benefits Employee contributions to the Thrift Plan are eligible for Company matching equal to 6% of base compensation, as defined in the Plan. The Company-provided matching contribution rates range from 50% for employees with less than 4 years of service to 200% for employees with 15 or more years of service. Additionally, a maximum Company-provided, non-elective annual contribution of up to $600 per participant is provided for employees whose annual base compensation is less than $60,000. Participants may direct investments in their accounts to a variety of options, including a BOK Financial common stock fund and Cavanal Hill funds. Employer contributions, which are invested in accordance with the participant’s investment options, vest over five years. Thrift Plan expenses were $32.9 million for 2023, $31.7 million for 2022 and $30.5 million for 2021.

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