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Note 5 - Credit Facilities (Details) - Credit Facilities Loan Balance (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Note 5 - Credit Facilities (Details) - Credit Facilities Loan Balance [Line Items]    
Loan Balance: $ 4,311 $ 2,393
Japan Term Loan 113 171
Japan Term Loan 0.10% [1] 0.10% [2]
United States [Member]
   
Note 5 - Credit Facilities (Details) - Credit Facilities Loan Balance [Line Items]    
Loan Balance: 3,615 1,762
Unused Availability 2.80% [1] 4.30% [2]
Australia [Member]
   
Note 5 - Credit Facilities (Details) - Credit Facilities Loan Balance [Line Items]    
Loan Balance: 696 210
Unused Availability 7.00% [1] 9.40% [2]
Canada [Member]
   
Note 5 - Credit Facilities (Details) - Credit Facilities Loan Balance [Line Items]    
Loan Balance:   $ 421
Unused Availability    [1] 4.00% [2]
[1] Based on interest rate at December 31, 2013
[2] Based on interest rate at December 31, 2012