STOCK OFFERINGS (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
	Sep. 08, 2011	Mar. 31, 2016	Dec. 31, 2015
Stock offering
Number of shares issued		9,283	9,283
Preferred stock, par value (in dollars per share)		$ 1,000	$ 1,000
Series B Preferred Stock
Stock offering
Number of shares issued		400
Dividend rate (as a percent)		6.00%
Period from first, second, third, fourth, and fifth anniversary of original issue date that stock may be convertible		30 days
Conversion price (in dollars per share)		$ 16
Series C Preferred Stock
Stock offering
Number of shares issued		383.4
Dividend rate (as a percent)		6.50%
Period from first, second, third, fourth, and fifth anniversary of original issue date that stock may be convertible		30 days
Conversion price (in dollars per share)		$ 16
Preferred Class A
Stock offering
Stock offering (in shares)	8,500
SBLF capital received	$ 8.5
Preferred stock, par value (in dollars per share)	$ 1,000
Preferred Class A | Through 8 March 2016
Stock offering
Dividend rate (as a percent)		1.00%
Preferred Class A | After 8 March 2016
Stock offering
Dividend rate (as a percent)		9.00%