Note 2 - Significant Accounting Policies - Property and Equipment Depreciation Rates (Details)	12 Months Ended
	Dec. 31, 2019
Computer Equipment [Member]
Property and Equipment Annual Depreciation Rate	33.00%
Computer Equipment [Member] | Minimum [Member]
Property and Equipment Annual Depreciation Rate	20.00%
Computer Equipment [Member] | Maximum [Member]
Property and Equipment Annual Depreciation Rate	33.00%
Office Furniture and Equipment [Member]
Property and Equipment Annual Depreciation Rate	15.00%
Office Furniture and Equipment [Member] | Minimum [Member]
Property and Equipment Annual Depreciation Rate	7.00%
Office Furniture and Equipment [Member] | Maximum [Member]
Property and Equipment Annual Depreciation Rate	15.00%