INVESTMENTS (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Investment balances
Cost	$ 45,982	$ 79,488
Gross Unrealized Gains	336	243
Gross Unrealized Losses	(123)	(111)
Estimated Market Value	46,195	79,620
U.S. Government and Government agency obligations
Investment balances
Cost	30,468	66,761
Gross Unrealized Gains	15	20
Gross Unrealized Losses	(4)	(8)
Estimated Market Value	30,479	66,773
Money market funds
Investment balances
Cost	2,934	8,250
Estimated Market Value	2,934	8,250
Equity funds
Investment balances
Cost	12,580	4,477
Gross Unrealized Gains	321	223
Gross Unrealized Losses	(119)	(103)
Estimated Market Value	$ 12,782	$ 4,597