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Note 6 - Other Receivables, Net (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Internet Advertising And TV Advertising Contractual Deposit [Member] | Allowance for Doubtful Accounts [Member]          
Valuation Allowances and Reserves, Additions for Recoveries $ 0     $ 0  
Internet Advertising And TV Advertising Contractual Deposit [Member]          
Provision for Doubtful Accounts 0 $ 162,000 $ 0 162,000  
Allowance for Doubtful Accounts Receivable $ 649,000   649,000   $ 668,000
Provision for Doubtful Accounts     $ 106,000