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Note 9 - Discontinued Operations (Details) |  |  |  |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Jul. 01, 2015 | Jun. 04, 2015 USD ($) | Jun. 20, 2014 USD ($) | Aug. 14, 2013 USD ($) | Jun. 30, 2015 USD ($) | Mar. 31, 2015 | Jun. 30, 2014 USD ($) | Jun. 30, 2014 USD ($) | Dec. 31, 2014 USD ($)
Note 9 - Discontinued Operations (Details) [Line Items] |  |  |  |  |  |  |  |  |
Number of Previously Shut Down Locations |  |  |  |  |  | 2 |  |  |
Tangible Asset Impairment Charges |  |  |  |  |  |  | $ 685,000 | $ 685,000 |
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment |  |  |  |  | $ 48,780,000 |  |  |  | $ 47,123,000
Not Held For Sale [Member] |  |  |  |  |  |  |  |  |
Note 9 - Discontinued Operations (Details) [Line Items] |  |  |  |  |  |  |  |  |
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment |  |  |  |  | 10,000 |  |  |  | $ 10,000
PFSG [Member] |  |  |  |  |  |  |  |  |
Note 9 - Discontinued Operations (Details) [Line Items] |  |  |  |  |  |  |  |  |
Payments for Hazardous Waste Management and Permit Violations |  |  |  |  | 201,200 |  |  |  |
PFMI [Member] |  |  |  |  |  |  |  |  |
Note 9 - Discontinued Operations (Details) [Line Items] |  |  |  |  |  |  |  |  |
Letter of Intent, Receivable for Property, Discontinued Operations |  | $ 450,000 |  |  |  |  |  |  |
Subsequent Event [Member] | PFSG [Member] |  |  |  |  |  |  |  |  |
Note 9 - Discontinued Operations (Details) [Line Items] |  |  |  |  |  |  |  |  |
Notification of Closure or Continuation of Facility, Notice Period | 60 days |  |  |  |  |  |  |  |
Submittal of Post Closure Plan | 90 days |  |  |  |  |  |  |  |
(Loss) Income from Discontinued Operations, Net of Taxes [Member] | PFMI [Member] |  |  |  |  |  |  |  |  |
Note 9 - Discontinued Operations (Details) [Line Items] |  |  |  |  |  |  |  |  |
Asset Impairment Charges |  |  |  |  | $ 150,000 |  |  |  |
PFSG Facility Fire Damage [Member] | PFSG [Member] |  |  |  |  |  |  |  |  |
Note 9 - Discontinued Operations (Details) [Line Items] |  |  |  |  |  |  |  |  |
Maximum Deductible Amount in Insurance for General Liability |  |  |  | $ 300,000 |  |  |  |  |
Proceeds from Insurance Settlement, Investing Activities |  |  | $ 3,850,000 |  |  |  |  |  |

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