FAIR VALUES OF ASSETS AND LIABILITIES - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Assets:
Cash and cash equivalents	$ 220,411	$ 355,147
Securities available-for-sale	1,003,303	1,042,365
Securities held-to-maturity	582,939	654,539
Equity securities	15,684	0
Loans held for sale	3,687	2,914
Loans, net	5,351,026	5,116,010	$ 3,774,000
Accrued interest receivable	34,002	33,300
Liabilities:
Non-interest-bearing deposits	1,796,685	1,849,013
Interest-bearing deposits	4,808,171	4,613,859
Subordinated debentures	123,731	123,386
Accrued interest payable	13,856	22,702
Interest rate swaps
Assets:
Interest rate swaps	10,509	12,170
Liabilities:
Interest rate swaps	10,510	12,175
Carrying Amount
Assets:
Cash and cash equivalents	220,411	355,147
Securities available-for-sale	1,003,303	1,042,365
Securities held-to-maturity	582,939	654,539
Equity securities	15,684
Loans held for sale	3,687	2,914
Loans, net	5,351,026	5,116,010
Accrued interest receivable	34,002	33,300
Liabilities:
Non-interest-bearing deposits	1,796,685	1,849,013
Interest-bearing deposits	4,808,171	4,613,859
Subordinated debentures	123,731	123,386
FHLB and other borrowings	210,000	390,000
Accrued interest payable	13,856	22,702
Carrying Amount | Interest rate swaps
Assets:
Interest rate swaps	10,509	12,170
Liabilities:
Interest rate swaps	10,510	12,175
Estimated Fair Value
Assets:
Cash and cash equivalents	220,411	355,147
Securities available-for-sale	1,003,303	1,042,365
Securities held-to-maturity	537,275	615,944
Equity securities	15,684
Loans held for sale	3,687	2,914
Loans, net	5,132,544	4,877,935
Accrued interest receivable	34,002	33,300
Liabilities:
Non-interest-bearing deposits	1,796,685	1,849,013
Interest-bearing deposits	4,644,812	4,430,227
Subordinated debentures	111,709	109,426
FHLB and other borrowings	210,000	390,000
Accrued interest payable	13,856	22,702
Estimated Fair Value | Interest rate swaps
Assets:
Interest rate swaps	10,509	12,170
Liabilities:
Interest rate swaps	10,510	12,175
Quoted Prices in Active Markets For Identical Assets (Level 1)
Assets:
Cash and cash equivalents	220,411	355,147
Securities available-for-sale	0	16,675
Securities held-to-maturity	0	0
Equity securities	15,684
Loans held for sale	0	0
Loans, net	0	0
Accrued interest receivable	0	0
Liabilities:
Non-interest-bearing deposits	0	0
Interest-bearing deposits	0	0
Subordinated debentures	0	0
FHLB and other borrowings	0	0
Accrued interest payable	0	0
Quoted Prices in Active Markets For Identical Assets (Level 1) | Interest rate swaps
Assets:
Interest rate swaps	0	0
Liabilities:
Interest rate swaps	0	0
Significant Other Observable Inputs (Level 2)
Assets:
Cash and cash equivalents	0	0
Securities available-for-sale	979,649	1,007,477
Securities held-to-maturity	526,743	615,944
Equity securities	0
Loans held for sale	3,687	2,914
Loans, net	0	0
Accrued interest receivable	8,160	8,632
Liabilities:
Non-interest-bearing deposits	1,796,685	1,849,013
Interest-bearing deposits	4,644,812	4,430,227
Subordinated debentures	0	0
FHLB and other borrowings	210,000	390,000
Accrued interest payable	13,856	22,702
Significant Other Observable Inputs (Level 2) | Interest rate swaps
Assets:
Interest rate swaps	10,491	12,129
Liabilities:
Interest rate swaps	10,491	12,129
Significant Unobservable Inputs (Level 3)
Assets:
Cash and cash equivalents	0	0
Securities available-for-sale	23,654	18,213
Securities held-to-maturity	10,532	0
Equity securities	0
Loans held for sale	0	0
Loans, net	5,132,544	4,877,935
Accrued interest receivable	25,842	24,668
Liabilities:
Non-interest-bearing deposits	0	0
Interest-bearing deposits	0	0
Subordinated debentures	111,709	109,426
FHLB and other borrowings	0	0
Accrued interest payable	0	0
Significant Unobservable Inputs (Level 3) | Interest rate swaps
Assets:
Interest rate swaps	18	41
Liabilities:
Interest rate swaps	$ 19	$ 46