Note 4 - Credit Facilities (Details) - Credit facilities loan balance (USD $) In Thousands, unless otherwise specified	9 Months Ended		12 Months Ended
	Sep. 30, 2013		Dec. 31, 2012
Note 4 - Credit Facilities (Details) - Credit facilities loan balance [Line Items]
Loan Balance: (in Dollars)	$ 2,214		$ 2,393	[1]
Japan Term Loan (in Dollars)	129		171
Japan Term Loan	0.10%	[2]	0.10%	[3]
United States [Member]
Note 4 - Credit Facilities (Details) - Credit facilities loan balance [Line Items]
Loan Balance: (in Dollars)	2,214		1,762
Unused Availability	2.80%	[2]	4.30%	[3]
Australia [Member]
Note 4 - Credit Facilities (Details) - Credit facilities loan balance [Line Items]
Loan Balance: (in Dollars)			210
Unused Availability		[2]	9.40%	[3]
Canada [Member]
Note 4 - Credit Facilities (Details) - Credit facilities loan balance [Line Items]
Loan Balance: (in Dollars)			$ 421
Unused Availability		[2]	4.00%	[3]

[1] The Balance Sheet at December 31, 2012, is excerpted from the consolidated audited financial statements as of that date but does not include certain information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.

[2] Based on average interest rate for the three months ended September 30, 2013.

[3] Based on average interest rate for the twelve months ended December 31, 2012.