OPERATING LEASES (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended					48 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2021
Operating Leases Details
Operating Leases	$ 1,518	$ 1,545	$ 1,562	$ 1,648	$ 1,975	$ 8,496