Note 11 - Business Segment Information (Details) - Revenues by Geographic Area (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012
Note 11 - Business Segment Information (Details) - Revenues by Geographic Area [Line Items]
Sales	$ 1,132	$ 360	$ 6,138	[1]	$ 1,071	[1]
United States [Member]
Note 11 - Business Segment Information (Details) - Revenues by Geographic Area [Line Items]
Sales			4,542	[1]	251	[1]
Denmark [Member]
Note 11 - Business Segment Information (Details) - Revenues by Geographic Area [Line Items]
Sales			1,291	[1]
Belgium [Member]
Note 11 - Business Segment Information (Details) - Revenues by Geographic Area [Line Items]
Sales			137	[1]	139	[1]
Germany [Member]
Note 11 - Business Segment Information (Details) - Revenues by Geographic Area [Line Items]
Sales					145	[1]
Sweden [Member]
Note 11 - Business Segment Information (Details) - Revenues by Geographic Area [Line Items]
Sales			43	[1]	131	[1]
Switzerland [Member]
Note 11 - Business Segment Information (Details) - Revenues by Geographic Area [Line Items]
Sales					111	[1]
Other Foreign Countries [Member]
Note 11 - Business Segment Information (Details) - Revenues by Geographic Area [Line Items]
Sales			$ 125	[1]	$ 294	[1]

[1] Revenues are attributed to countries based on location of customer.