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Note 9 - Discontinued Operations (Details Textual) |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
May 02, 2016 USD ($) | Jun. 30, 2016 USD ($) | Jun. 30, 2015 USD ($) | Jun. 30, 2016 USD ($) | Jun. 30, 2015 USD ($) | Dec. 31, 2015 USD ($)
PFMI [Member] | Loss Income from Discontinued Operations, Net of Taxes [Member] |  |  |  |  |  |
Asset Impairment Charges |  |  | $ 150,000 |  | $ 150,000 |
PFMI [Member] |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration | $ 450,000 |  |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration, At Closing, Gross | 75,000 |  |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration, At Closing, Net | 46,000 |  |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration, After Closing | $ 375,000 |  |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration, Number of Monthly Installment Payments | 60 |  |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration, Installment Payment | $ 7,250 |  |  |  |  |
PFSG [Member] |  |  |  |  |  |
Payments for Hazardous Waste Management and Permit Violations |  |  | 201,200 |  | 201,200 |
Not Held for Sale [Member] |  |  |  |  |  |
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment |  | $ 10,000 |  | $ 10,000 |  | $ 10,000
Number of Previously Shut Down Locations |  |  |  | 2 |  |
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment |  | 51,249,000 |  | $ 51,249,000 |  | $ 49,707,000
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent |  | (264,000) | (713,000) | (431,000) | (936,000) |
Discontinued Operation, Tax Effect of Gain (Loss) from Disposal of Discontinued Operation |  | $ 0 | $ 0 | $ 0 | $ 0 |

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