Note 3 - Cash and Cash Equivalents (Tables)

12 Months Ended

Dec. 31, 2018

Statement Line Items [Line Items]

Disclosure of cash, cash equivalents, and term deposits [text block]

		Interest Rate			December 31, 2018		December 31, 2017
Cash at bank and on hand	0	-	2.53%	$	55,180	$	30,395
Term deposit (less than 90 days)	2.54	-	2.69%		75,000		130,000
Cash and cash equivalents				$	130,180	$	160,395