Note 1 - Significant Accounting Policies and Related Matters - Summary of Property and Equipment (Details)	12 Months Ended
	Dec. 31, 2018
Computers and Equipment [Member] | Minimum [Member]
Useful life (Year)	3 years
Computers and Equipment [Member] | Maximum [Member]
Useful life (Year)	5 years
Machinery and Equipment [Member] | Minimum [Member]
Useful life (Year)	3 years
Machinery and Equipment [Member] | Maximum [Member]
Useful life (Year)	10 years
Leasehold Improvements [Member]
Estimated useful life	The shorter of its useful life or lease term