LOANS RECEIVABLE, NET - Nonaccrual (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance	$ 57,240	$ 14,401
Nonaccrual with Allowance	44,893	13,314
Reserve	14,995	4,061
Commercial portfolio
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance	51,137	8,794
Nonaccrual with Allowance	44,893	13,314
Reserve	14,995	4,061
Commercial portfolio \| Commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance	0	0
Nonaccrual with Allowance	112	713
Reserve	112	713
Commercial portfolio \| Multifamily
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance	42,334	0
Nonaccrual with Allowance	44,781	10,316
Reserve	14,883	1,871
Commercial portfolio \| Construction and land development
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance	8,803	8,794
Nonaccrual with Allowance	0	2,285
Reserve	0	1,477
Retail portfolio
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance	6,103	5,607
Nonaccrual with Allowance	0	0
Reserve	0	0
Retail portfolio \| Residential real estate lending
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance	3,525	2,419
Nonaccrual with Allowance	0	0
Reserve	0	0
Retail portfolio \| Consumer solar
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance	2,414	3,129
Nonaccrual with Allowance	0	0
Reserve	0	0
Retail portfolio \| Consumer and Other
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual with No Allowance	164	59
Nonaccrual with Allowance	0	0
Reserve	$ 0	$ 0