INVESTMENTS Debt Securities and Common Stock (Details)	3 Months Ended
	Mar. 31, 2016 USD ($) security position	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)
Securities in unrealized loss positions
Unrealized Loss	$ 12,043,000		$ 19,252,000
Debt securities
Securities in unrealized loss positions
Number of unrealized loss positions | position	279
Number of securities in unrealized loss positions for 12 months or longer | security	70
Unrealized Loss	$ 11,300,000
Unrealized losses as percentage of fixed income portfolio cost basis	0.70%
Other-than-temporary impairment (OTTI) losses recognized in other comprehensive earnings	$ 0	$ 0
Common Stock
Securities in unrealized loss positions
Number of unrealized loss positions | position	4
Number of securities in unrealized loss positions for 12 months or longer | security	0
Unrealized Loss	$ 800,000
Other-than-temporary impairment (OTTI) losses recognized in other comprehensive earnings	$ 0	$ 0