BUSINESS COMBINATIONS - Schedule of Reconciliation Between the Purchase Price and the Fair Value (Details) - CrossFirst $ in Thousands	Mar. 01, 2025 USD ($)
PCD Financial Assets
Gross contractual receivable for PCD financial assets	$ 4,790,000
Fair value of PCD financial assets	4,700,000
Financial Asset Acquired with Credit Deterioration
PCD Financial Assets
Gross contractual receivable for PCD financial assets	1,539,718
ACL recorded for estimated uncollectible contractual cash flows specific to PCD financial assets	(100,783)
Interest premium (discount) specific to PCD financial assets	(3,063)
Loans previously charged-off prior to acquisition	(110,740)
Fair value of PCD financial assets	$ 1,325,132

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Amount of estimated contractual cash flow not expected to be collected for receivable purchased without credit deterioration, acquired in business combination. Excludes purchased financial asset with credit deterioration.

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Amount of financial asset acquired in business combination and recognized at acquisition date.

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