LONG-TERM DEBT (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016	Jun. 30, 2015
Long-term debt
Long-term debt	$ 4,511		$ 4,511		$ 4,633
Amortization of deferred financing costs			40	$ 40
Debt Agreement to Finance Building Purchase and Improvements
Long-term debt
Maximum funds available under debt agreement						$ 5,100
Interest rate (as a percent)						4.15%
Total amount of principal and interest payments to be paid through the maturity date of the debt agreement						$ 31
Final principal and interest payment due under the debt agreement						4,400
Deferred financing costs						$ 73
Amortization of deferred financing costs	$ 4	$ 4	$ 13	$ 13