Note 2 - Summary of Significant Accounting Policies (Detail) - Lines of credit (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
US dollars (in Dollars)	$ 2,564	[1]
Minimum [Member] | International [Member]
Variable interest rate	0.10%	[2]
Maximum [Member] | International [Member]
Variable interest rate	9.40%	[2]
United States [Member]
Variable interest rate	4.00%	[2]
US dollars (in Dollars)	1,762	[1]
International [Member]
US dollars (in Dollars)	$ 802	[1]

[1] Based on exchange rate at December 31, 2012

[2] Per annum interest at December 31, 2012