Note 2 - Summary of Significant Accounting Policies (Detail) - Property and equipment	12 Months Ended
	Dec. 31, 2012
Building [Member]
Property and equipment, useful life	25 years
Machinery and Equipment [Member] | Minimum [Member]
Property and equipment, useful life	5 years
Machinery and Equipment [Member] | Maximum [Member]
Property and equipment, useful life	15 years
Furniture and Fixtures [Member] | Minimum [Member]
Property and equipment, useful life	2 years
Furniture and Fixtures [Member] | Maximum [Member]
Property and equipment, useful life	7 years
Leasehold Improvements [Member] | Minimum [Member]
Property and equipment, useful life	4 years
Leasehold Improvements [Member] | Maximum [Member]
Property and equipment, useful life	5 years