Note 14 - Geographical, Customer Concentration and Products Data (Details) - Net Sales to External Customers (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 14,625,889	$ 13,676,186	$ 13,386,336
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	11,966,000	11,283,881	10,646,590
Foreign Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 2,659,889	$ 2,392,305	$ 2,739,746