LONG TERM DEBT AND NOTES PAYABLE TO BANK (Schedule of Long-Term Debt) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total long-term debt	$ 7,458	$ 6,618
Less amounts classified as current maturities	5,938	5,082
Long-term Debt	1,520	1,536
Revolving credit facility with MidCap, see above description for additional details
Debt Instrument [Line Items]
Total long-term debt	5,874	5,018
K and R, LLC [Member]
Debt Instrument [Line Items]
Total long-term debt	700	716
Grade Lane 7100, LLC [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 884	$ 884