PORTFOLIO LOANS - Schedule of Past Due and Non-accrual Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Financing Receivable, Past Due [Line Items]
Total portfolio loans	$ 13,567,799	$ 7,697,087
90 days past due and still accruing	2,288	1,149
Non-accrual Loans	51,198	22,088
Non-accrual Loans with No Allowance for Credit Losses	6,707	16,418
30-59 Days
Financing Receivable, Past Due [Line Items]
Total portfolio loans	9,009	4,552
60-89 Days
Financing Receivable, Past Due [Line Items]
Total portfolio loans	7,466	3,572
Commercial loans
Financing Receivable, Past Due [Line Items]
Total portfolio loans	10,818,515	5,552,288
90 days past due and still accruing	2,128	0
Non-accrual Loans	42,403	18,928
Non-accrual Loans with No Allowance for Credit Losses	6,358	16,224
Commercial loans | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total portfolio loans	4,061	178
Commercial loans | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total portfolio loans	3,107	2,759
Commercial loans | C&I and other commercial
Financing Receivable, Past Due [Line Items]
Total portfolio loans	4,229,208	1,904,515
90 days past due and still accruing	2,128	0
Non-accrual Loans	34,298	3,852
Non-accrual Loans with No Allowance for Credit Losses	4,612	1,224
Commercial loans | C&I and other commercial | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total portfolio loans	3,577	95
Commercial loans | C&I and other commercial | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total portfolio loans	593	0
Commercial loans | CRE
Financing Receivable, Past Due [Line Items]
Total portfolio loans	5,550,018	3,269,564
90 days past due and still accruing	0	0
Non-accrual Loans	7,832	15,053
Non-accrual Loans with No Allowance for Credit Losses	1,588	15,000
Commercial loans | CRE | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total portfolio loans	484	42
Commercial loans | CRE | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total portfolio loans	2,514	2,759
Commercial loans | Real estate construction
Financing Receivable, Past Due [Line Items]
Total portfolio loans	1,039,289	378,209
90 days past due and still accruing	0	0
Non-accrual Loans	273	23
Non-accrual Loans with No Allowance for Credit Losses	158	0
Commercial loans | Real estate construction | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total portfolio loans	0	41
Commercial loans | Real estate construction | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total portfolio loans	0	0
Retail loans
Financing Receivable, Past Due [Line Items]
Total portfolio loans	2,749,284	2,144,799
90 days past due and still accruing	160	1,149
Non-accrual Loans	8,795	3,160
Non-accrual Loans with No Allowance for Credit Losses	349	194
Retail loans | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total portfolio loans	4,948	4,374
Retail loans | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total portfolio loans	4,359	813
Retail loans | CRE
Financing Receivable, Past Due [Line Items]
Total portfolio loans	2,154,616	1,696,457
90 days past due and still accruing	136	1,115
Non-accrual Loans	8,421	2,984
Non-accrual Loans with No Allowance for Credit Losses	349	194
Retail loans | CRE | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total portfolio loans	2,457	3,280
Retail loans | CRE | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total portfolio loans	4,280	683
Retail loans | Retail other
Financing Receivable, Past Due [Line Items]
Total portfolio loans	594,668	448,342
90 days past due and still accruing	24	34
Non-accrual Loans	374	176
Non-accrual Loans with No Allowance for Credit Losses	0	0
Retail loans | Retail other | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total portfolio loans	2,491	1,094
Retail loans | Retail other | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total portfolio loans	$ 79	$ 130