Note 2 - Estimated Useful Lives for Each Asset Group (Details)	12 Months Ended
	Dec. 31, 2015
Building and Building Improvements [Member] | Minimum [Member]
Estimated useful lives	20 years
Building and Building Improvements [Member] | Maximum [Member]
Estimated useful lives	30 years
Machinery and Equipment [Member] | Minimum [Member]
Estimated useful lives	7 years
Machinery and Equipment [Member] | Maximum [Member]
Estimated useful lives	15 years
Furniture and Fixtures [Member] | Minimum [Member]
Estimated useful lives	5 years
Furniture and Fixtures [Member] | Maximum [Member]
Estimated useful lives	7 years
Computer Equipment [Member] | Minimum [Member]
Estimated useful lives	3 years
Computer Equipment [Member] | Maximum [Member]
Estimated useful lives	7 years