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Note 15 - Subsequent Events (Details) - Future Minimum Lease Payments (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Jan. 31, 2015
Note 15 - Subsequent Events (Details) - Future Minimum Lease Payments [Line Items]      
2015   $ 31us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent  
2016 229us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears    
2017 58us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears    
Total minimum lease payments 455us-gaap_OperatingLeasesFutureMinimumPaymentsDue 31us-gaap_OperatingLeasesFutureMinimumPaymentsDue  
Subsequent Event [Member]      
Note 15 - Subsequent Events (Details) - Future Minimum Lease Payments [Line Items]      
2015     199us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
2016     229us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
2017     58us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Total minimum lease payments     $ 486us-gaap_OperatingLeasesFutureMinimumPaymentsDue
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember