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 ($)
$ in Thousands
6 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Investment $ 96,021 $ 101,907
Trust Preferred Capital Notes    
Debt Instrument [Line Items]    
Trust preferred capital notes principal balance 90,500  
Investment 2,801  
Statutory Trust I    
Debt Instrument [Line Items]    
Trust preferred capital notes principal balance 22,500  
Investment $ 696  
Rate 4.05%  
Maturity Jun. 17, 2034  
Statutory Trust I | LIBOR    
Debt Instrument [Line Items]    
Spread to 3-Month LIBOR 2.75%  
Statutory Trust II    
Debt Instrument [Line Items]    
Trust preferred capital notes principal balance $ 36,000  
Investment $ 1,114  
Rate 2.70%  
Maturity Jun. 15, 2036  
Statutory Trust II | LIBOR    
Debt Instrument [Line Items]    
Spread to 3-Month LIBOR 1.40%  
VFG Limited Liability Trust I Indenture    
Debt Instrument [Line Items]    
Trust preferred capital notes principal balance $ 20,000  
Investment $ 619  
Rate 4.03%  
Maturity Mar. 18, 2034  
VFG Limited Liability Trust I Indenture | LIBOR    
Debt Instrument [Line Items]    
Spread to 3-Month LIBOR 2.73%  
FNB Statutory Trust II Indenture    
Debt Instrument [Line Items]    
Trust preferred capital notes principal balance $ 12,000  
Investment $ 372  
Rate 4.40%  
Maturity Jun. 26, 2033  
FNB Statutory Trust II Indenture | LIBOR    
Debt Instrument [Line Items]    
Spread to 3-Month LIBOR 3.10%