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PORTFOLIO LOANS - Distribution of portfolio loans (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Portfolio loans | $ 7,725,702 | $ 7,188,998 |  |
ACL | (91,608) | (87,887) | $ (101,048) | $ (53,748)
Portfolio loans, net | 7,634,094 | 7,101,111 |  |
Commercial |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Portfolio loans | 1,974,154 | 1,943,886 |  |
ACL | (23,860) | (23,855) | (23,866) | (18,291)
Commercial real estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Portfolio loans | 3,261,873 | 3,119,807 |  |
ACL | (38,299) | (38,249) | (46,230) | (21,190)
Real estate construction |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Portfolio loans | 530,469 | 385,996 |  |
ACL | (6,457) | (5,102) | (8,193) | (3,204)
Retail real estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Portfolio loans | 1,657,082 | 1,512,976 |  |
ACL | (18,193) | (17,589) | (21,992) | (10,495)
Retail other |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Portfolio loans | 302,124 | 226,333 |  |
ACL | $ (4,799) | $ (3,092) | $ (767) | $ (568)

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