v3.24.3

Derivatives and Hedging - Narrative (Details) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
Derivatives and Hedging - Narrative (Details) $ in Millions	Mar. 31, 2024 item	Sep. 30, 2024 USD ($) item contract	Dec. 31, 2022 item	Dec. 31, 2023 USD ($) contract item
Derivatives and Hedging
Collateral paid		$ 1.8		$ 1.0
Collateral received		$ 0.7		$ 1.5
Interest Rate Swap \| Designated as Hedging Instrument
Derivatives and Hedging
Number of cash flow hedges matured \| item		2
Number of cash flow hedges terminated \| item		2
Number of instruments \| item		1		5
Notional Amount		$ 250.0		$ 340.0
Derivative instruments to be reclassified to interest income in next 12 months		$ 0.5
Number of hedges terminated \| item	2		5
Maximum exposure period		2 years 3 months 18 days
Interest Rate Swap \| Not Designated as Hedging Instrument
Derivatives and Hedging
Number of instruments \| contract		50		46
Notional Amount		$ 356.0		$ 307.0
Credit Risk \| Not Designated as Hedging Instrument
Derivatives and Hedging
Number of instruments \| contract		13
Notional Amount		$ 71.0

Derivative Instrument, Maximum Period Of Exposure

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Number of cash flow hedges matured.

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Number of cash flow hedges terminated.

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Number of hedges terminated.

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- Definition

Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets.

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Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Nominal or face amount used to calculate payment on derivative.

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The number of derivative instruments of a particular group held by the entity.

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The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

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CROSSFIRST BANKSHARES, INC. 10-Q