Note 4 - Property and Equipment, Net - Property and Equipment (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Cost	$ 5,799,176	$ 4,615,011
Accumulated Depreciation	4,438,861	4,062,473
Net Book Value	1,360,315	552,538
Computer And Office Equipment [Member]
Cost	3,067,069	2,322,833
Accumulated Depreciation	2,202,166	1,949,982
Net Book Value	$ 864,903	372,851
Property, Plant and Equipment, Useful Life	5 years
Leasehold Improvements [Member]
Cost	$ 136,648	118,380
Accumulated Depreciation	106,362	98,901
Net Book Value	$ 30,286	19,479
Property, Plant and Equipment, Useful Life	5 years
Software and Software Development Costs [Member]
Cost	$ 2,426,339	2,010,999
Accumulated Depreciation	1,991,842	1,886,342
Net Book Value	$ 434,497	124,657
Property, Plant and Equipment, Useful Life	3 years
Furniture and Fixtures [Member]
Cost	$ 169,120	162,799
Accumulated Depreciation	138,491	127,248
Net Book Value	$ 30,629	$ 35,551
Property, Plant and Equipment, Useful Life	5 years