Note 8 - Customer and Geographic Information (Details) - Revenues by Geographic Area (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Note 8 - Customer and Geographic Information (Details) - Revenues by Geographic Area [Line Items]
Revenues	$ 22,406	$ 25,489	$ 74,102	$ 74,375
Sales Revenue, Net [Member] | Geographic Concentration Risk [Member] | North America [Member]
Note 8 - Customer and Geographic Information (Details) - Revenues by Geographic Area [Line Items]
Revenues	10,529	7,686	32,087	28,367
Concentration Risk Percentage	47.00%	30.00%	43.00%	38.00%
Sales Revenue, Net [Member] | Geographic Concentration Risk [Member] | GERMANY
Note 8 - Customer and Geographic Information (Details) - Revenues by Geographic Area [Line Items]
Revenues	7,913	5,140	26,046	15,006
Concentration Risk Percentage	35.00%	20.00%	35.00%	20.00%
Sales Revenue, Net [Member] | Geographic Concentration Risk [Member] | KOREA, REPUBLIC OF
Note 8 - Customer and Geographic Information (Details) - Revenues by Geographic Area [Line Items]
Revenues	1,304	8,272	4,806	16,816
Concentration Risk Percentage	6.00%	32.00%	6.00%	23.00%
Sales Revenue, Net [Member] | Geographic Concentration Risk [Member] | JAPAN
Note 8 - Customer and Geographic Information (Details) - Revenues by Geographic Area [Line Items]
Revenues	479	2,223	3,408	6,445
Concentration Risk Percentage	2.00%	9.00%	5.00%	9.00%
Sales Revenue, Net [Member] | Geographic Concentration Risk [Member] | Rest of Asia [Member]
Note 8 - Customer and Geographic Information (Details) - Revenues by Geographic Area [Line Items]
Revenues	925	1,256	3,643	4,899
Concentration Risk Percentage	4.00%	5.00%	5.00%	7.00%
Sales Revenue, Net [Member] | Geographic Concentration Risk [Member] | Rest of Europe [Member]
Note 8 - Customer and Geographic Information (Details) - Revenues by Geographic Area [Line Items]
Revenues	1,256	912	4,112	2,842
Concentration Risk Percentage	6.00%	4.00%	6.00%	3.00%
Sales Revenue, Net [Member] | Geographic Concentration Risk [Member]
Note 8 - Customer and Geographic Information (Details) - Revenues by Geographic Area [Line Items]
Revenues	$ 22,406	$ 25,489	$ 74,102	$ 74,375
Concentration Risk Percentage	100.00%	100.00%	100.00%	100.00%