Note 1 - Summary of Significant Accounting Policies - Property and Equipment Estimated Useful Lives (Details)	12 Months Ended
	Dec. 31, 2016
Building and Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	5 years
Building and Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	40 years
Equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	5 years
Equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	15 years
Furniture and Fixtures [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	3 years
Furniture and Fixtures [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	10 years