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Note 10 - Subsequent Events
9 Months Ended
Sep. 30, 2017
Notes to Financial Statements  
Subsequent Events [Text Block]
10.
Subsequent Events
 
The Company has evaluated all activity that occurred subsequent to quarter end but prior to issuance of the unaudited condensed consolidated financial statements for events or transactions that could require disclosure or that could impact the carrying value of assets or liabilities as of the balance sheet date.