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Note 3 - New Accounting Standards (Details Textual) - Reclassification From Other Non-current Assets to Non-current Portion of Long-term Debt [Member] - December 31, 2015 [Member]
9 Months Ended
Sep. 30, 2016
USD ($)
Prior Period Reclassification Adjustment $ 220,000
Current Period Reclassification Adjustment $ 199,000