Note 2 - Significant Accounting Policies - Property and Equipment Estimated Useful Lives (Details)	12 Months Ended
	Dec. 31, 2016
Land Improvements [Member] | Minimum [Member]
Property and equipment, estimated useful lives (Year)	15 years
Land Improvements [Member] | Maximum [Member]
Property and equipment, estimated useful lives (Year)	20 years
Building and Building Improvements [Member] | Minimum [Member]
Property and equipment, estimated useful lives (Year)	10 years
Building and Building Improvements [Member] | Maximum [Member]
Property and equipment, estimated useful lives (Year)	40 years
Machinery and Equipment [Member] | Minimum [Member]
Property and equipment, estimated useful lives (Year)	3 years
Machinery and Equipment [Member] | Maximum [Member]
Property and equipment, estimated useful lives (Year)	10 years
Dies and Tools [Member] | Minimum [Member]
Property and equipment, estimated useful lives (Year)	3 years
Dies and Tools [Member] | Maximum [Member]
Property and equipment, estimated useful lives (Year)	10 years
Vehicles [Member] | Minimum [Member]
Property and equipment, estimated useful lives (Year)	3 years
Vehicles [Member] | Maximum [Member]
Property and equipment, estimated useful lives (Year)	6 years
Office Equipment [Member] | Minimum [Member]
Property and equipment, estimated useful lives (Year)	3 years
Office Equipment [Member] | Maximum [Member]
Property and equipment, estimated useful lives (Year)	15 years
Leasehold Improvements [Member] | Minimum [Member]
Property and equipment, estimated useful lives (Year)	2 years
Leasehold Improvements [Member] | Maximum [Member]
Property and equipment, estimated useful lives (Year)	20 years