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LEASES - Schedule of Lease Costs and Other Lease Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Lease costs |  |  |  |
Operating lease costs | $ 1,795 | $ 559 | $ 2,752 | $ 1,094
Variable lease costs | 15 | 14 | 30 | 28
Short-term lease costs | 18 | 45 | 30 | 58
Total lease cost | 1,828 | 618 | 2,812 | 1,180
Cash flows related to leases |  |  |  |
Operating lease cash flows – Fixed payments | 1,707 | 530 | 2,582 | 1,037
Operating lease cash flows – Liability reduction | 1,289 | 433 | 1,973 | 844
Right of use assets obtained during the period in exchange for operating lease liabilities | $ (1,115) | 1,009 | 29,618 | 1,009
CrossFirst |  |  |  |
Cash flows related to leases |  |  |  |
Right of use assets obtained during the period in exchange for operating lease liabilities |  |  | $ 29,600 |
M&M |  |  |  |
Cash flows related to leases |  |  |  |
Right of use assets obtained during the period in exchange for operating lease liabilities |  | 300 |  | 300
Additional right of use assets obtained during the period in exchange for operating lease liabilities |  | $ 700 |  | $ 700

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- Definition Amount of cash outflow from operating lease restricted to fixed payment, excluding payments to bring another asset to condition and location necessary for its intended use. + References No definition available. + Details
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- Definition Amount of lease cost recognized by lessee for lease contract. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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