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Note 4 - Credit Facilities (Details) - Unused Availability (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Note 4 - Credit Facilities (Details) - Unused Availability [Line Items]    
Unusеd Αvailability $ 2,269us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity $ 3,253us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
UNITED STATES    
Note 4 - Credit Facilities (Details) - Unused Availability [Line Items]    
Unusеd Αvailability 1,696us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
/ us-gaap_StatementGeographicalAxis
= country_US		 2,885us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
/ us-gaap_StatementGeographicalAxis
= country_US
AUSTRALIA    
Note 4 - Credit Facilities (Details) - Unused Availability [Line Items]    
Unusеd Αvailability $ 573us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
/ us-gaap_StatementGeographicalAxis
= country_AU		 $ 368us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
/ us-gaap_StatementGeographicalAxis
= country_AU