Note 2 - Significant Accounting Policies (Details) - Allowance for Doubtful Accounts - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Allowance for Doubtful Accounts [Abstract]
Beginning Balance	$ 22,900	$ 23,100	$ 32,600	$ 42,000
Provision	(7,000)	(2,700)	(16,700)	(21,600)
Ending Balance	$ 15,900	$ 20,400	$ 15,900	$ 20,400