Note 4 - Balance Sheet Components - Loss From Abandonment and (or) Disposal of Obsolete Equipment, by Segment (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Loss on disposal or abandonment of assets	$ 3,139	$ 16,985	$ 31,064
North America Segment [Member]
Loss on disposal or abandonment of assets	2,378	17,699	19,583
International Leathercraft [Member]
Loss on disposal or abandonment of assets	$ 761	$ (714)	$ 11,481