AVAILABLE FOR SALE SECURITIES (Details) - USD ($) $ in Thousands, shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Number of available for sale shares acquired (in shares)				4.1
Purchase of available for sale securities			$ 0	$ 48,219
Available for sale securities	$ 46,044		46,044		$ 45,754
Investment income, dividend	600	$ 0	1,900	1,000
Available for sale securities, investment related expenses	$ 0	$ 0	$ 0	$ 3,400