Note 9 - Restructuring (Details) - Changes in Company's Reserve with Respect to Restructuring Plan (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Note 9 - Restructuring (Details) - Changes in Company's Reserve with Respect to Restructuring Plan [Line Items]
Beginning Balance	$ 102,500		$ 128,900
Expense	0	66,185	0	283,924
Payment/Charges	0		(26,400)
Ending Balance	102,500		102,500
Employee Severance [Member]
Note 9 - Restructuring (Details) - Changes in Company's Reserve with Respect to Restructuring Plan [Line Items]
Beginning Balance	13,500		27,900
Expense	0		0
Payment/Charges	0		(14,400)
Ending Balance	13,500		13,500
Inventory [Member]
Note 9 - Restructuring (Details) - Changes in Company's Reserve with Respect to Restructuring Plan [Line Items]
Beginning Balance	89,000		89,000
Expense	0		0
Payment/Charges	0
Ending Balance	89,000		89,000
Other Restructuring [Member]
Note 9 - Restructuring (Details) - Changes in Company's Reserve with Respect to Restructuring Plan [Line Items]
Beginning Balance			12,000
Expense	0		0
Payment/Charges	$ 0		$ (12,000)