PORTFOLIO LOANS - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net deferred loan origination costs	$ 7,000,000.0	$ 12,500,000
Net accretable purchase accounting adjustments	(86,600,000)	(8,800,000)
Bank overdrafts	7,100,000	3,800,000
Amount of interest collected and recognized on a cash basis	0	0	$ 400,000
Commitment to lend	13,500,000	0
Collateral dependent loans secured by real estate or business assets	47,800,000	19,300,000
90+ Days
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross interest income that would have been recorded if impaired loans had been current	3,000,000.0	900,000	1,100,000
Retail loans | CRE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans purchased	117,300,000	$ 6,900,000	$ 0
Commercial loans | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Limit where loans are processed through an expedited underwriting process	2,000,000.0
Commercial loans | Watch
Accounts, Notes, Loans and Financing Receivable [Line Items]
Limit above which loans are annually reviewed	2,000,000.0
Commercial loans | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Limit above which loans are annually reviewed	$ 350,000