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Note 14 - Income Taxes (Details Textual) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Apr. 01, 2018
Effective Income Tax Rate Reconciliation, Percent, Total 17.70% 26.00%
Unrecognized Tax Benefits, Period Increase (Decrease), Total $ (0.2)  
Unrecognized Tax Benefits, Ending Balance 27.9  
Increase (Decrease) in Deferred Tax Assets $ (2.8)