FEDERAL HOME LOAN BANK OF ATLANTA ("FHLB") (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
FEDERAL HOME LOAN BANK OF ATLANTA ("FHLB") [Abstract]
Required investment in FHLB stock as a percent of total assets	0.09%
Base amount, as a component of the maximum amount of FHLB stock that may be purchased	$ 15.0
Percent of outstanding FHLB advances, as a component of the maximum amount of FHLB stock that may be purchased	4.50%
Carrying value of FHLB stock	$ 0.3	$ 0.3