Note 2 - Basis of Presentation and Summary of Significant Accounting Policies (Details) - Summary of Stock-based Compensation (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Allocated Stock-based Compensation	$ 135	$ 51	$ 258	$ 96
Cost of Sales [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Allocated Stock-based Compensation	4	1	6	1
Research and Development Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Allocated Stock-based Compensation	3	8	2	15
Selling, General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Allocated Stock-based Compensation	$ 128	$ 42	$ 250	$ 80