INVESTMENTS - Portfolio Analysis (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) position security	Dec. 31, 2014 USD ($)
Securities in unrealized loss positions
Total unrealized loss	$ 19,252	$ 7,119
Unrealized losses for 12 consecutive months or longer	5,407	$ 1,655
Fixed maturities and short-term investments on deposit with either regulatory authorities or banks	$ 25,400
Debt securities
Securities in unrealized loss positions
Number of unrealized loss positions | position	472
Number of securities in unrealized loss positions for 12 months or longer | security	44
Maximum period for securities with unrealized losses greater than 20 percent	12 months
Unrealized losses for 12 consecutive months or longer	$ 5,400
Common Stock
Securities in unrealized loss positions
Number of unrealized loss positions | security	6
Number of securities in unrealized loss positions of greater than 20 percent | security	0
Maximum period for securities with unrealized losses greater than 20 percent	6 months
Common Stock | Maximum
Securities in unrealized loss positions
Maximum percentage of unrealized loss to portfolio for more than six consecutive months	20.00%