Note 4 - Prepaid expenses and other assets  | 
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Dec. 31, 2017  | ||||||||||||||||||||||||||
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| Note 4 - Prepaid expenses and other assets | 
 Note 4  Prepaid expenses and other assets 
 Prepaid expenses and other assets consist of the following at December 31, 2017 and 2016: 
 
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| X | ||||||||||
- Definition Tabular disclosure of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer; the aggregate carrying amount of current assets, not separately presented elsewhere in the balance sheet; and other deferred costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
- References No definition available. 
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