Note 1 - Summary of Significant Accounting Policies - Estimated Useful Lives of Property, Plant, and Equipment (Details)	12 Months Ended
	Dec. 31, 2016
Building and Building Improvements [Member] | Minimum [Member]
Buildings and improvements (in years) (Year)	20 years
Building and Building Improvements [Member] | Maximum [Member]
Buildings and improvements (in years) (Year)	40 years
Machinery and Equipment [Member] | Minimum [Member]
Buildings and improvements (in years) (Year)	7 years
Machinery and Equipment [Member] | Maximum [Member]
Buildings and improvements (in years) (Year)	15 years
Furniture, Fixtures, and Computers [Member] | Minimum [Member]
Buildings and improvements (in years) (Year)	3 years
Furniture, Fixtures, and Computers [Member] | Maximum [Member]
Buildings and improvements (in years) (Year)	7 years