Quarterly report pursuant to Section 13 or 15(d)

BORROWINGS (Trust Preferred Capital Notes Qualify for Tier 1 Capital) (Details)

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BORROWINGS (Trust Preferred Capital Notes Qualify for Tier 1 Capital) (Details) - USD ($)
 9 Months Ended
Sep. 30, 2015
Dec. 31, 2014
Trust preferred capital notes qualify for Tier 1 capital    
Investment $ 85,718,000 $ 84,637,000
Statutory Trust I [Member]    
Trust preferred capital notes qualify for Tier 1 capital    
Trust preferred capital notes principal balance 22,500,000  
Investment [1] $ 696,000  
Rate 3.08%  
Maturity Jun. 17, 2034  
Statutory Trust II [Member]    
Trust preferred capital notes qualify for Tier 1 capital    
Trust preferred capital notes principal balance $ 36,000,000  
Investment [1] $ 1,114,000  
Rate 1.73%  
Maturity Jun. 15, 2036  
VFG Limited Liability Trust I Indenture [Member]    
Trust preferred capital notes qualify for Tier 1 capital    
Trust preferred capital notes principal balance $ 20,000,000  
Investment [1] $ 619,000  
Rate 3.06%  
Maturity Mar. 18, 2034  
FNB Statutory Trust II Indenture [Member]    
Trust preferred capital notes qualify for Tier 1 capital    
Trust preferred capital notes principal balance $ 12,000,000  
Investment [1] $ 372,000  
Rate 3.43%  
Maturity Jun. 26, 2033  
Trust Preferred Capital Notes [Member]    
Trust preferred capital notes qualify for Tier 1 capital    
Trust preferred capital notes principal balance $ 90,500,000  
Investment [1] $ 2,801,000  
LIBOR [Member] | Statutory Trust I [Member]    
Trust preferred capital notes qualify for Tier 1 capital    
Spread on 3-Month LIBOR 2.75%  
LIBOR [Member] | Statutory Trust II [Member]    
Trust preferred capital notes qualify for Tier 1 capital    
Spread on 3-Month LIBOR 1.40%  
LIBOR [Member] | VFG Limited Liability Trust I Indenture [Member]    
Trust preferred capital notes qualify for Tier 1 capital    
Spread on 3-Month LIBOR 2.73%  
LIBOR [Member] | FNB Statutory Trust II Indenture [Member]    
Trust preferred capital notes qualify for Tier 1 capital    
Spread on 3-Month LIBOR 3.10%  
[1] reported as "Other Assets" within the Consolidated Balance Sheets.