STOCK-BASED COMPENSATION - Schedule of Stock Appreciation Rights Activity (Details) - SSARs - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Shares
Outstanding at beginning of period (in shares)	0
Replacement of CrossFirst SSARs (in shares)	424,390
Exercised (in shares)	(119,842)
Forfeited (in shares)	(4,005)
Expired (in shares)	(30,145)
Outstanding at end of period (in shares)	270,398
Exercisable (in shares)	253,560
Weighted- Average Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 0
Replacement of CrossFirst SSARs (in dollars per share)	15.78
Exercised (in dollars per shares)	13.31
Forfeited (in dollars per shares)	16.00
Expired (in dollars per shares)	23.23
Outstanding at ending of period (in dollars per share)	16.04
Exercisable (in dollars per share)	$ 15.70
Weighted- Average Remaining Contractual Term
Weighted- Average Remaining Contractual Term	4 years 11 months 23 days
Weighted- Average Remaining Contractual Term, Exercisable (in years)	4 years 11 months 8 days
Intrinsic value, options outstanding	$ 2,095	$ 0
Intrinsic value, exercisable at end of year	2,051
Aggregate intrinsic value of SSARs exercised	$ 1,100