Note 15 - Segment Information (Details) - Revenue by Country (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Note 15 - Segment Information (Details) - Revenue by Country [Line Items]
Revenue by location	$ 1,340,200	$ 1,617,000
UNITED STATES
Note 15 - Segment Information (Details) - Revenue by Country [Line Items]
Revenue by location	551,000	643,600
GERMANY
Note 15 - Segment Information (Details) - Revenue by Country [Line Items]
Revenue by location	96,400	188,300
BRAZIL
Note 15 - Segment Information (Details) - Revenue by Country [Line Items]
Revenue by location	157,000	133,000
Other Countries [Member]
Note 15 - Segment Information (Details) - Revenue by Country [Line Items]
Revenue by location	$ 535,800	$ 652,100