Note 4 - Property and Equipment (Detail) - Property and Equipment (Parentheticals)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Equipment [Member] | Minimum [Member]
Property and Equipment, Useful Life	3 years	3 years
Equipment [Member] | Maximum [Member]
Property and Equipment, Useful Life	15 years	15 years
Tooling [Member] | Minimum [Member]
Property and Equipment, Useful Life	2 years	2 years
Tooling [Member] | Maximum [Member]
Property and Equipment, Useful Life	5 years	5 years
Furniture and Fixtures [Member]
Property and Equipment, Useful Life	5 years	5 years
Software [Member]
Property and Equipment, Useful Life	3 years	3 years
Minimum [Member]
Property and Equipment, Useful Life	2 years
Maximum [Member]
Property and Equipment, Useful Life	15 years