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FAIR VALUE MEASUREMENT - Fair Value, Balance Sheet Grouping (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Carrying Amount |  |
Financial Assets |  |
Cash and cash equivalents | $ 426,161 | $ 560,510
Investment securities: |  |
HTM, at carrying value | 1,165,007 | 1,186,152
Mortgage-backed securities: |  |
HTM, at carrying value | 114,227 | 120,901
FHLB stock, at cost | 33,818 | 11,936
Equity investments | 4,210 | 4,383
Loans, net of allowance for loan losses | 4,616,713 | 4,481,836
Loans held for sale | 1,946 | 10,894
Financial Liabilities: |  |
Deposits | 6,654,248 | 6,549,681
Other borrowings | 76,443 | 509,820
FHLB borrowings | 731,909 | 212,648
Subordinated notes, net of unamortized debt issuance costs | 92,042 | 93,877
Trust preferred subordinated debentures, net of unamortized debt issuance costs | 60,274 | 60,270
Estimated Fair Value |  |
Financial Assets |  |
Cash and cash equivalents | 426,161 | 560,510
Investment securities: |  |
HTM, at carrying value | 1,009,778 | 1,054,739
Mortgage-backed securities: |  |
HTM, at carrying value | 103,704 | 111,423
FHLB stock, at cost | 33,818 | 11,936
Equity investments | 4,210 | 4,383
Loans, net of allowance for loan losses | 4,499,646 | 4,198,879
Loans held for sale | 1,946 | 10,894
Financial Liabilities: |  |
Deposits | 6,646,510 | 6,534,929
Other borrowings | 76,399 | 510,242
FHLB borrowings | 727,177 | 202,750
Subordinated notes, net of unamortized debt issuance costs | 88,999 | 86,285
Trust preferred subordinated debentures, net of unamortized debt issuance costs | 56,172 | 57,480
Estimated Fair Value | Level 1 |  |
Financial Assets |  |
Cash and cash equivalents | 426,161 | 560,510
Investment securities: |  |
HTM, at carrying value | 0 | 0
Mortgage-backed securities: |  |
HTM, at carrying value | 0 | 0
FHLB stock, at cost | 0 | 0
Equity investments | 0 | 0
Loans, net of allowance for loan losses | 0 | 0
Loans held for sale | 0 | 0
Financial Liabilities: |  |
Deposits | 0 | 0
Other borrowings | 0 | 0
FHLB borrowings | 0 | 0
Subordinated notes, net of unamortized debt issuance costs | 0 | 0
Trust preferred subordinated debentures, net of unamortized debt issuance costs | 0 | 0
Estimated Fair Value | Level 2 |  |
Financial Assets |  |
Cash and cash equivalents | 0 | 0
Investment securities: |  |
HTM, at carrying value | 1,009,778 | 1,054,739
Mortgage-backed securities: |  |
HTM, at carrying value | 103,704 | 111,423
FHLB stock, at cost | 33,818 | 11,936
Equity investments | 4,210 | 4,383
Loans, net of allowance for loan losses | 0 | 0
Loans held for sale | 1,946 | 10,894
Financial Liabilities: |  |
Deposits | 6,646,510 | 6,534,929
Other borrowings | 76,399 | 510,242
FHLB borrowings | 727,177 | 202,750
Subordinated notes, net of unamortized debt issuance costs | 88,999 | 86,285
Trust preferred subordinated debentures, net of unamortized debt issuance costs | 56,172 | 57,480
Estimated Fair Value | Level 3 |  |
Financial Assets |  |
Cash and cash equivalents | 0 | 0
Investment securities: |  |
HTM, at carrying value | 0 | 0
Mortgage-backed securities: |  |
HTM, at carrying value | 0 | 0
FHLB stock, at cost | 0 | 0
Equity investments | 0 | 0
Loans, net of allowance for loan losses | 4,499,646 | 4,198,879
Loans held for sale | 0 | 0
Financial Liabilities: |  |
Deposits | 0 | 0
Other borrowings | 0 | 0
FHLB borrowings | 0 | 0
Subordinated notes, net of unamortized debt issuance costs | 0 | 0
Trust preferred subordinated debentures, net of unamortized debt issuance costs | $ 0 | $ 0

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