Annual report pursuant to Section 13 and 15(d)

Note 4 - Property and Equipment (Details Textual)

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Note 4 - Property and Equipment (Details Textual) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Depreciation, Nonproduction $ 0.5 $ 0.6