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MERGERS AND ACQUISITIONS - Schedule of Estimated Acquisition-date Fair Values of the Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands | Mar. 01, 2025 | Feb. 28, 2025 | Apr. 01, 2024 | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | --- | --- | --- | ---
Consideration paid |  |  |  |  |
Goodwill |  |  |  | $ 381,794 | $ 333,695
CrossFirst |  |  |  |  |
Assets acquired |  |  |  |  |
Cash and cash equivalents | $ 385,808 |  |  |  |
Securities | 725,622 |  |  |  |
Portfolio loans, net of ACL | 6,023,063 |  |  |  |
Premises and equipment | 64,249 |  |  |  |
Right of use assets | 29,374 |  |  |  |
Other intangible assets | 81,783 |  |  |  |
Other assets | 190,411 |  |  |  |
Total assets acquired | 7,500,310 |  |  |  |
Liabilities assumed |  |  |  |  |
Deposits | 6,571,699 |  |  |  |
Short-term borrowings | 11,148 |  |  |  |
Long-term debt | 62,557 |  |  |  |
Subordinated notes, net of unamortized issuance costs | 0 |  |  |  |
Junior subordinated debt owed to unconsolidated trusts | 2,238 |  |  |  |
Lease liabilities | 29,374 |  |  |  |
Other liabilities | 62,338 |  |  |  |
Total liabilities assumed | 6,739,354 |  |  |  |
Net assets acquired | 760,956 |  |  |  |
Consideration paid |  |  |  |  |
Cash | 4 |  |  |  |
Total consideration paid | 808,980 | $ 6,000 |  |  |
Goodwill | 48,024 |  |  |  |
CrossFirst | Common stock |  |  |  |  |
Consideration paid |  |  |  |  |
Common stock | 795,227 |  |  |  |
CrossFirst | Preferred stock |  |  |  |  |
Consideration paid |  |  |  |  |
Common stock | 7,750 |  |  |  |
CrossFirst | Replacement awards |  |  |  |  |
Consideration paid |  |  |  |  |
Common stock | $ 5,999 |  |  |  |
M&M |  |  |  |  |
Assets acquired |  |  |  |  |
Cash and cash equivalents |  |  | $ 33,577 |  |
Securities |  |  | 8,086 |  |
Portfolio loans, net of ACL |  |  | 417,230 |  |
Premises and equipment |  |  | 2,045 |  |
Right of use assets |  |  | 253 |  |
Other intangible assets |  |  | 6,346 |  |
Other assets |  |  | 10,208 |  |
Total assets acquired |  |  | 477,745 |  |
Liabilities assumed |  |  |  |  |
Deposits |  |  | 392,838 |  |
Short-term borrowings |  |  | 35,932 |  |
Long-term debt |  |  | 1,450 |  |
Subordinated notes, net of unamortized issuance costs |  |  | 3,911 |  |
Junior subordinated debt owed to unconsolidated trusts |  |  | 2,594 |  |
Lease liabilities |  |  | 253 |  |
Other liabilities |  |  | 7,089 |  |
Total liabilities assumed |  |  | 444,067 |  |
Net assets acquired |  |  | 33,678 |  |
Consideration paid |  |  |  |  |
Cash |  |  | 15,200 |  |
Total consideration paid |  |  | 49,575 |  |
Goodwill |  |  | 15,897 |  |
M&M | Common stock |  |  |  |  |
Consideration paid |  |  |  |  |
Common stock |  |  | 34,375 |  |
M&M | Preferred stock |  |  |  |  |
Consideration paid |  |  |  |  |
Common stock |  |  | 0 |  |
M&M | Replacement awards |  |  |  |  |
Consideration paid |  |  |  |  |
Common stock |  |  | $ 0 |  |

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