INVESTMENTS (Other Equity Securities) (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Other Securities Owned [Line Items]
Federal Reserve Bank stock	$ 8,334	$ 8,269
Total equity securities	46,094	41,336
Atlantic Central Bankers Bank Stock
Other Securities Owned [Line Items]
Federal Home Loan Bank of Atlanta stock	$ 37,760	$ 33,067