Note 14 - Segments, Geographical Information (Tables)
|6 Months Ended|
Jun. 30, 2017
|Segment Reporting [Abstract]|
|Revenue, Net by Geographic Area||
Tabular disclosure of the names of foreign countries from which revenue is material and the amount of revenue from external customers attributed to those countries. An entity may also provide subtotals of geographic information about groups of countries.
Reference 1: http://www.xbrl.org/2003/role/presentationRef