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Note 16 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
6 Months Ended
Jul. 02, 2017
Jul. 03, 2016
Dec. 31, 2016
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 35.00% 35.00%  
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent 30.00% 30.00%  
Undistributed Earnings of Foreign Subsidiaries $ 0   $ 0