Note 9 - Stockholders' Equity - Schedule of Escrowed Shares Released (Details) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Escrowed shares balance (in shares)	22,606,069	33,909,104
Escrowed shares released (in shares)	(22,606,069)	(11,303,035)
Escrowed shares balance (in shares)	0	22,606,069