Quarterly report [Sections 13 or 15(d)]

BORROWINGS (Long-Term Borrowings) (Details)

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BORROWINGS (Long-Term Borrowings) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Debt Instrument [Line Items]    
Trust Preferred Capital Securities $ 179,000 $ 179,000
Subordinated Debt 250,000 250,000
Fair Value Premium (Discount) (15,875) (16,239)
Investment in Trust Preferred Capital Securities 5,542 5,542
Total Long-term Borrowings $ 418,667 $ 418,303
Basis spread on variable rate 0.262% 0.262%
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] us-gaap:SecuredOvernightFinancingRateSofrMember us-gaap:SecuredOvernightFinancingRateSofrMember
Trust Preferred Capital Notes    
Debt Instrument [Line Items]    
Remaining fair value discount on acquired notes $ 13,800 $ 14,000
Statutory Trust I    
Debt Instrument [Line Items]    
Trust Preferred Capital Securities 22,500 22,500
Investment in Trust Preferred Capital Securities $ 696 $ 696
Basis spread on variable rate 2.75% 2.75%
Rate 7.30% 7.32%
Maturity date Jun. 17, 2034 Jun. 17, 2034
Statutory Trust II    
Debt Instrument [Line Items]    
Trust Preferred Capital Securities $ 36,000 $ 36,000
Investment in Trust Preferred Capital Securities $ 1,114 $ 1,114
Basis spread on variable rate 1.40% 1.40%
Rate 5.95% 5.97%
Maturity date Jun. 15, 2036 Jun. 15, 2036
VFG Limited Liability Trust I Indenture    
Debt Instrument [Line Items]    
Trust Preferred Capital Securities $ 20,000 $ 20,000
Investment in Trust Preferred Capital Securities $ 619 $ 619
Basis spread on variable rate 2.73% 2.73%
Rate 7.28% 7.30%
Maturity date Mar. 18, 2034 Mar. 18, 2034
FNB Statutory Trust II Indenture    
Debt Instrument [Line Items]    
Trust Preferred Capital Securities $ 12,000 $ 12,000
Investment in Trust Preferred Capital Securities $ 372 $ 372
Basis spread on variable rate 3.10% 3.10%
Rate 7.65% 7.67%
Maturity date Jun. 26, 2033 Jun. 26, 2033
Gateway Capital Statutory Trust I    
Debt Instrument [Line Items]    
Trust Preferred Capital Securities $ 8,000 $ 8,000
Investment in Trust Preferred Capital Securities $ 248 $ 248
Basis spread on variable rate 3.10% 3.10%
Rate 7.65% 7.67%
Maturity date Sep. 17, 2033 Sep. 17, 2033
Gateway Capital Statutory Trust II    
Debt Instrument [Line Items]    
Trust Preferred Capital Securities $ 7,000 $ 7,000
Investment in Trust Preferred Capital Securities $ 217 $ 217
Basis spread on variable rate 2.65% 2.65%
Rate 7.20% 7.22%
Maturity date Jun. 17, 2034 Jun. 17, 2034
Gateway Capital Statutory Trust III    
Debt Instrument [Line Items]    
Trust Preferred Capital Securities $ 15,000 $ 15,000
Investment in Trust Preferred Capital Securities $ 464 $ 464
Basis spread on variable rate 1.50% 1.50%
Rate 6.05% 6.07%
Maturity date May 30, 2036 May 30, 2036
Gateway Capital Statutory Trust IV    
Debt Instrument [Line Items]    
Trust Preferred Capital Securities $ 25,000 $ 25,000
Investment in Trust Preferred Capital Securities $ 774 $ 774
Basis spread on variable rate 1.55% 1.55%
Rate 6.10% 6.12%
Maturity date Jul. 30, 2037 Jul. 30, 2037
MFC Capital Trust II    
Debt Instrument [Line Items]    
Trust Preferred Capital Securities $ 5,000 $ 5,000
Investment in Trust Preferred Capital Securities $ 155 $ 155
Basis spread on variable rate 2.85% 2.85%
Rate 7.40% 7.42%
Maturity date Jan. 23, 2034 Jan. 23, 2034
AMNB Trust I    
Debt Instrument [Line Items]    
Trust Preferred Capital Securities $ 20,000 $ 20,000
Investment in Trust Preferred Capital Securities $ 619 $ 619
Basis spread on variable rate 1.35% 1.35%
Rate 5.90% 5.92%
Maturity date Jun. 30, 2036 Jun. 30, 2036
MidCarolina Trust I    
Debt Instrument [Line Items]    
Trust Preferred Capital Securities $ 5,000 $ 5,000
Investment in Trust Preferred Capital Securities $ 155 $ 155
Basis spread on variable rate 3.45% 3.45%
Rate 7.74% 7.76%
Maturity date Nov. 07, 2032 Nov. 07, 2032
MidCarolina Trust II    
Debt Instrument [Line Items]    
Trust Preferred Capital Securities $ 3,500 $ 3,500
Investment in Trust Preferred Capital Securities $ 109 $ 109
Basis spread on variable rate 2.95% 2.95%
Rate 7.24% 7.26%
Maturity date Jan. 07, 2034 Jan. 07, 2034
Subordinated Debt [Member]    
Debt Instrument [Line Items]    
Remaining fair value discount on acquired notes $ 2,100 $ 2,200
Subordinated Debt [Member] | Scenario, Plan [Member]    
Debt Instrument [Line Items]    
Basis spread on variable rate 1.86% 1.86%
2031 Subordinate Debt    
Debt Instrument [Line Items]    
Subordinated Debt $ 250,000 $ 250,000
Basis spread on variable rate 0.00% 0.00%
Rate 2.875% 2.875%
Maturity date Dec. 15, 2031 Dec. 15, 2031