Quarterly report pursuant to Section 13 or 15(d)

Note 9 - Discontinued Operations (Details Textual)

v3.7.0.1
Note 9 - Discontinued Operations (Details Textual)
3 Months Ended 6 Months Ended
May 02, 2016
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Dec. 31, 2016
USD ($)
Number of Previously Shut Down Locations       2    
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent   $ (160,000) $ (264,000) $ (291,000) $ (431,000)  
Discontinued Operation, Tax Effect of Discontinued Operation   0 0 0 0  
Disposal Group, Including Discontinued Operation, Revenue   0 $ 0 0 $ 0  
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment   55,385,000   55,385,000   $ 53,323,000
PFMI [Member]            
Disposal Group, Including Discontinued Operation, Consideration, Installment Payment $ 7,250          
Disposal Group, Including Discontinued Operation, Consideration, Remaining Balance   302,000   302,000    
Disposal Group, Including Discontinued Operation, Consideration, After Closing $ 375,000          
Disposal Group, Including Discontinued Operation, Consideration, Number of Monthly Installment Payments 60          
PFMI [Member] | Current Assets Related to Discontinued Operations [Member]            
Disposal Group, Including Discontinued Operation, Consideration, Remaining Balance   70,000   70,000    
PFMI [Member] | Other Assets Related to Discontinued Operations [Member]            
Disposal Group, Including Discontinued Operation, Consideration, Remaining Balance   232,000   232,000    
Not Held for Sale [Member]            
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment   $ 10,000   $ 10,000   $ 10,000