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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Loan Summary (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Loans receivable, net |  |  |  |
Gross loans, including deferred origination costs | $ 8,809,394 | $ 7,373,639 |  |
Allowance for credit losses | (61,059) | (49,869) |  |
Net loans | 8,748,335 | 7,323,770 |  |
Net deferred loan origination costs | 73,800 | 34,900 |  |
Loans receivable, related parties |  |  |  |
Balance at beginning of year | 13,773 | 15,549 |  |
New loans | 2,025 | 2,500 |  |
Payments | (3,425) | (4,276) |  |
Balance at end of year | 12,373 | 13,773 |  |
Business Lending |  |  |  |
Loans receivable, net |  |  |  |
Gross loans, including deferred origination costs | 3,645,665 | 3,075,904 |  |
Consumer Mortgage |  |  |  |
Loans receivable, net |  |  |  |
Gross loans, including deferred origination costs | 3,012,475 | 2,556,114 |  |
Consumer Indirect |  |  |  |
Loans receivable, net |  |  |  |
Gross loans, including deferred origination costs | 1,539,653 | 1,189,749 |  |
Consumer Direct |  |  |  |
Loans receivable, net |  |  |  |
Gross loans, including deferred origination costs | 177,605 | 153,811 |  |
Home Equity |  |  |  |
Loans receivable, net |  |  |  |
Gross loans, including deferred origination costs | 433,996 | 398,061 |  |
Allowance for credit losses |  |  |  | $ (2,129)
Commercial Portfolio Segment | Business Lending |  |  |  |
Loans receivable, net |  |  |  |
Gross loans, including deferred origination costs | 3,645,665 | 3,075,904 |  |
Allowance for credit losses |  | (22,995) | $ (30,072) | (19,426)
Commercial Portfolio Segment | Consumer Mortgage |  |  |  |
Loans receivable, net |  |  |  |
Allowance for credit losses |  | (10,017) | (10,672) | (10,269)
Residential Portfolio Segment | Consumer Mortgage |  |  |  |
Loans receivable, net |  |  |  |
Gross loans, including deferred origination costs | 3,012,475 | 2,556,114 |  |
Consumer Portfolio Segment | Business Lending |  |  |  |
Loans receivable, net |  |  |  |
Allowance for credit losses | (23,297) | (22,995) |  |
Consumer Portfolio Segment | Consumer Mortgage |  |  |  |
Loans receivable, net |  |  |  |
Allowance for credit losses | (14,343) | (10,017) |  |
Consumer Portfolio Segment | Consumer Indirect |  |  |  |
Loans receivable, net |  |  |  |
Gross loans, including deferred origination costs | 1,539,653 | 1,189,749 |  |
Allowance for credit losses | (17,852) | (11,737) | (13,696) | (13,712)
Consumer Portfolio Segment | Consumer Direct |  |  |  |
Loans receivable, net |  |  |  |
Gross loans, including deferred origination costs | 177,605 | 153,811 |  |
Allowance for credit losses | (2,973) | (2,306) | (3,207) | $ (3,255)
Consumer Portfolio Segment | Home Equity |  |  |  |
Loans receivable, net |  |  |  |
Gross loans, including deferred origination costs | 433,996 | 398,061 |  |
Allowance for credit losses | $ (1,594) | $ (1,814) | $ (2,222) |

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