PORTFOLIO LOANS -Summary of portfolio loans that are past due and still accruing or on a non-accrual status (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Portfolio loans	$ 7,725,702	$ 7,188,998
90 days past due and still accruing	673	906
Non-accrual Loans	15,067	15,946
30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Portfolio loans	5,249	3,964
60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Portfolio loans	1,299	2,297
Commercial
Financing Receivable, Past Due [Line Items]
Portfolio loans	1,974,154	1,943,886
90 days past due and still accruing	0	213
Non-accrual Loans	6,174	7,004
Commercial | 30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Portfolio loans	2	363
Commercial | 60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Portfolio loans	0	10
Commercial real estate
Financing Receivable, Past Due [Line Items]
Portfolio loans	3,261,873	3,119,807
90 days past due and still accruing	0	0
Non-accrual Loans	5,644	5,973
Commercial real estate | 30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Portfolio loans	124	151
Commercial real estate | 60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Portfolio loans	0	441
Real estate construction
Financing Receivable, Past Due [Line Items]
Portfolio loans	530,469	385,996
90 days past due and still accruing		0
Non-accrual Loans		0
Real estate construction | 30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Portfolio loans		56
Real estate construction | 60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Portfolio loans		0
Retail real estate
Financing Receivable, Past Due [Line Items]
Portfolio loans	1,657,082	1,512,976
90 days past due and still accruing	673	693
Non-accrual Loans	3,096	2,898
Retail real estate | 30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Portfolio loans	4,709	3,312
Retail real estate | 60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Portfolio loans	1,239	1,830
Retail other
Financing Receivable, Past Due [Line Items]
Portfolio loans	302,124	226,333
90 days past due and still accruing	0	0
Non-accrual Loans	153	71
Retail other | 30 to 59 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Portfolio loans	414	82
Retail other | 60 to 89 days past due and still accruing
Financing Receivable, Past Due [Line Items]
Portfolio loans	$ 60	$ 16