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Note 11 - Commitments and Contingencies | 6 Months Ended
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Jun. 30, 2017
Notes to Financial Statements |
Commitments and Contingencies Disclosure [Text Block] | 1 1 . Commitments and contingencies: The Company is involved in various legal claims and lawsuits in connection with its ordinary business operations. The Company intends to vigorously defend these claims. While the final outcome with respect to any actions or claims outstanding or pending as of June 30, 2017 cannot be predicted with certainty, management does not believe that the resolution of these claims, individually or in the aggregate, will have a material adverse effect on the Company's financial position.

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