LONG-TERM DEBT (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Long-term debt
Long-term debt	$ 4,711,000	$ 4,711,000	$ 4,789,000
Amortization of deferred financing costs		26,000
Debt Agreement to Finance Building Purchase and Improvements
Long-term debt
Maximum funds available under debt agreement				$ 5,100,000
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				$ 31,000
Final principal and interest payment due under the debt agreement				4,400,000
Deferred financing costs				$ 73,000
Amortization of deferred financing costs	$ 5,000	$ 9,000