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MERGERS AND ACQUISITIONS - Schedule of Reconciliation Between the Purchase Price and the Fair Value (Details) - USD ($) $ in Thousands	Mar. 01, 2025	Apr. 01, 2024
CrossFirst
PCD Financial Assets
Gross contractual receivable for PCD financial assets	$ 4,790,000
Fair value of PCD financial assets	4,700,000
CrossFirst | 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 by CrossFirst	(110,740)
Fair value of PCD financial assets	$ 1,325,132
M&M | Financial Asset Acquired with Credit Deterioration
PCD Financial Assets
Gross contractual receivable for PCD financial assets		$ 29,290
ACL recorded for estimated uncollectible contractual cash flows specific to PCD financial assets		(1,243)
Interest premium (discount) specific to PCD financial assets		(1,773)
Loans previously charged-off by CrossFirst		0
Fair value of PCD financial assets		$ 26,274

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