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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledge with FHLB under blanket lien	$ 2,180,000
Loans held for investment	3,068,774		$ 3,139,165
Loans held for sale, at lower of cost or fair value	4,625		17,180
Loans held for sale	4,900		17,900
Loans over 90 days past due and still accruing interest	45		150
Defaults of loans that were modified in the last 12 months	358	$ 0
Foreclosed assets	4,083		4,083
Accrued interest receivable on loans receivable, net	10,100		11,700
Provision (reversal) for unfunded commitment losses	(618)	(17)
Allowance for credit losses - unfunded loan commitments	2,485	$ 916	3,103	$ 933
Small Business Administration (SBA) 7 Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale, at lower of cost or fair value			10,300
Asset Pledged as Collateral | Federal Home Loan Bank Advances
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	1,330,000
Asset Pledged as Collateral | Federal Reserve Bank Advances
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	363,000
Real Estate - Other | Multifamily residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	237,896		243,993
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	23,569		24,749
Commercial & Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	$ 672,468		710,970
Loans held for sale, at lower of cost or fair value			$ 6,900
Financing Receivable | Credit Concentration Risk | Real Estate - Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percent of total loans	77.00%		77.00%

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Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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