Note 11 - Business Segment Information (Details) - Revenues by Geographic Area (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Note 11 - Business Segment Information (Details) - Revenues by Geographic Area [Line Items]
Sales	$ 3,152,000	$ 454,000	$ 5,006,000	$ 711,000
Denmark [Member]
Note 11 - Business Segment Information (Details) - Revenues by Geographic Area [Line Items]
Sales			1,291,000
United States [Member]
Note 11 - Business Segment Information (Details) - Revenues by Geographic Area [Line Items]
Sales			3,485,000	205,000
Belgium [Member]
Note 11 - Business Segment Information (Details) - Revenues by Geographic Area [Line Items]
Sales			132,000
Germany [Member]
Note 11 - Business Segment Information (Details) - Revenues by Geographic Area [Line Items]
Sales				142,000
Sweden [Member]
Note 11 - Business Segment Information (Details) - Revenues by Geographic Area [Line Items]
Sales				131,000
Switzerland [Member]
Note 11 - Business Segment Information (Details) - Revenues by Geographic Area [Line Items]
Sales				103,000
Other Foreign Countries [Member]
Note 11 - Business Segment Information (Details) - Revenues by Geographic Area [Line Items]
Sales			$ 98,000	$ 130,000