STOCK OFFERINGS (Details) - USD ($) $ / shares in Units, $ in Thousands					10 Months Ended	12 Months Ended			54 Months Ended
	Jan. 05, 2017	Dec. 06, 2016	Jun. 30, 2014	Sep. 08, 2011	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Mar. 08, 2016
Stock offering
Common stock, par value (in dollars per share)					$ 1	$ 1	$ 1
Proceeds from stock offering, net of issuance costs						$ 20,519	$ 0	$ 5,588
Number of designated preferred shares (in shares)					9,283	9,283	9,283
SBLF capital received						$ 0	$ 0	$ 7,834
Preferred stock, par value (in dollars per share)					$ 1,000	$ 1,000	$ 1,000
Series B Preferred Stock
Stock offering
Number of designated preferred shares (in shares)			400
Dividend rate			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 designated preferred shares (in shares)			383.4
Dividend rate			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
Dividend rate				1.00%	9.00%				1.00%
SBLF capital received				$ 8,500
Preferred stock, par value (in dollars per share)				$ 1,000
Private Placement
Stock offering
Stock offering (in shares)		1,913,044
Common stock, par value (in dollars per share)		$ 1.00
Sale of stock, price per share (in dollars per share)		$ 11.50
Proceeds from stock offering, gross		$ 22,000
Proceeds from stock offering, net of issuance costs		$ 20,500
Subsequent Event | Preferred Class A
Stock offering
Stock redeemed (in shares)	8,500
Liquidation amount per share (in dollars per share)	$ 1,000