FAIR VALUE ACCOUNTING (Details) - Recurring - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Assets:
Investments	$ 15,329	$ 8,543
Assets	15,329	8,543
Level 1
Assets:
Investments	11,744	6,749
Assets	11,744	6,749
Level 2
Assets:
Investments	3,585	1,794
Assets	$ 3,585	$ 1,794