LOANS AND ALLOWANCE FOR CREDIT LOSSES - NONACCRUAL (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2025 USD ($) item	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)
Aging or recorded investments in loans
Nonaccrual with ACLL	$ 1,884		$ 2,705
Nonaccrual with no ACLL	92		147
Nonaccrual with no ACLL	20,846		19,914
Nonaccrual	22,730		22,619
Nonaccrual	92		147
Financing Receivable, 90 Days or More Past Due, Still Accruing	120		141
Interest Income Recognized on Nonaccrual Loans	$ 463	$ 352
Number of consecutive months payments received before non-accrual loans returned to accrual status (in months) | item	6
Core Banking Activities
Aging or recorded investments in loans
Nonaccrual	$ 22,730		22,619
Traditional Banking
Aging or recorded investments in loans
Nonaccrual	22,730		22,619
Nonaccrual	92		147
Republic Processing Group
Aging or recorded investments in loans
Financing Receivable, 90 Days or More Past Due, Still Accruing	120		141
Residential real estate | Residential Real Estate - Owner Occupied
Aging or recorded investments in loans
Nonaccrual with ACLL	472		688
Nonaccrual with no ACLL	16,973		16,643
Nonaccrual	17,445		17,331
Interest Income Recognized on Nonaccrual Loans	368	246
Residential real estate | Residential Real Estate - Owner Occupied | Traditional Banking
Aging or recorded investments in loans
Nonaccrual	17,445		17,331
Residential real estate | Residential Real Estate - Non Owner Occupied
Aging or recorded investments in loans
Nonaccrual with ACLL	24		25
Nonaccrual with no ACLL	33		56
Nonaccrual	57		81
Interest Income Recognized on Nonaccrual Loans	17	15
Residential real estate | Residential Real Estate - Non Owner Occupied | Traditional Banking
Aging or recorded investments in loans
Nonaccrual	57		81
Residential real estate | Home equity lines of credit
Aging or recorded investments in loans
Nonaccrual with no ACLL	2,686		2,359
Nonaccrual	2,686		2,359
Interest Income Recognized on Nonaccrual Loans		49
Residential real estate | Home equity lines of credit | Traditional Banking
Aging or recorded investments in loans
Nonaccrual	2,686		2,359
Commercial real estate | Commercial Real Estate - Owner Occupied
Aging or recorded investments in loans
Nonaccrual with ACLL	170		180
Nonaccrual with no ACLL			244
Nonaccrual	170		424
Interest Income Recognized on Nonaccrual Loans	48	38
Commercial real estate | Commercial Real Estate - Owner Occupied | Traditional Banking
Aging or recorded investments in loans
Nonaccrual	170		424
Commercial real estate | Commercial Real Estate - Non Owner Occupied
Aging or recorded investments in loans
Nonaccrual with ACLL	489		524
Nonaccrual with no ACLL	276		275
Nonaccrual	765		799
Interest Income Recognized on Nonaccrual Loans	4	$ 4
Commercial real estate | Commercial Real Estate - Non Owner Occupied | Traditional Banking
Aging or recorded investments in loans
Nonaccrual	765		799
Commercial & industrial | Commercial and Industrial
Aging or recorded investments in loans
Nonaccrual with ACLL	644		726
Nonaccrual with no ACLL	95		134
Nonaccrual	739		860
Interest Income Recognized on Nonaccrual Loans	5
Commercial & industrial | Commercial and Industrial | Traditional Banking
Aging or recorded investments in loans
Nonaccrual	739		860
Aircraft
Aging or recorded investments in loans
Nonaccrual with ACLL	80
Nonaccrual with no ACLL	691		56
Nonaccrual	771		56
Aircraft | Traditional Banking
Aging or recorded investments in loans
Nonaccrual	771		56
Consumer
Aging or recorded investments in loans
Nonaccrual with ACLL	5		562
Nonaccrual	5		562
Interest Income Recognized on Nonaccrual Loans	21
Consumer | Automobile loans | Traditional Banking
Aging or recorded investments in loans
Nonaccrual	4		5
Consumer | Other Consumer | Traditional Banking
Aging or recorded investments in loans
Nonaccrual	1		557
Republic Credit Solution | Republic Credit Solutions
Aging or recorded investments in loans
Financing Receivable, 90 Days or More Past Due, Still Accruing	$ 120		$ 141