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Note 9 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2016 | Mar. 29, 2015 | Dec. 31, 2015
Maximum [Member] |  |  |
Income Tax Expense (Benefit) | $ 100 |  |
Earliest Tax Year [Member] | Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] |  |  |
Income Tax Examination, Year under Examination | 2009 |  |
Latest Tax Year [Member] | Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] |  |  |
Income Tax Examination, Year under Examination | 2013 |  |
Effective Income Tax Rate Reconciliation, Percent | 2.50% | 9.90% |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 35.00% | 35.00% |
Income Tax Expense (Benefit) | $ 59 | $ 155 |
Income Taxes Receivable | $ 2,100 |  | $ 2,100

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