INVESTMENTS (Held to Maturity) (Details) - USD ($)	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures [Abstract]
Amortized cost	$ 17,921,000		$ 16,519,000
Unrealized gain (loss), net	142,000		(116,000)
Fair value	18,063,000		$ 16,403,000
Sales of investments during the period	$ 0	$ 0
Investment maturity period	10 years