Quarterly report pursuant to Section 13 or 15(d)

SECURITIES (Narrative) (Details)

v3.4.0.3
SECURITIES (Narrative) (Details)
 3 Months Ended 12 Months Ended
Mar. 31, 2016
USD ($)
security
Jun. 30, 2015
USD ($)
Dec. 31, 2015
USD ($)
security
Schedule of Investments [Line Items]      
Federal Home Loan Bank requires Bank to maintain percentage of stock equal to outstanding borrowings 4.25%   4.25%
Percentage of Federal Reserve Bank of Richmond reserve 6.00%   6.00%
Restricted equity securities consist of Federal Reserve Bank stock $ 23,800,000   $ 23,800,000
Federal Home Loan Bank Stock 34,400,000   28,000,000
Securities in a continuous loss position, more than 12 months, unrealized losses 1,803,000   1,382,000
Individual securities that had been in a continuous loss position for more than 12 months, amount 57,729,000   46,168,000
Transfer from securities available for sale to securities held to maturity   $ 201,800,000  
Held to maturity securities unrealized gains before tax 6,400,000 $ 8,100,000  
Credit-related OTTI $ 0   $ 300,000
Available-for-sale Securities [Member]      
Schedule of Investments [Line Items]      
Individual securities that had been in a continuous loss position | security 18   20