Note 11 - Financial Instruments (Details)	3 Months Ended			3 Months Ended
	Mar. 31, 2015 USD ($)	Sep. 30, 2013 GBP (£)	Jun. 30, 2013 AUD	Mar. 31, 2015 Forward Contracts [Member] USD ($)	Mar. 31, 2015 Other Current Assets [Member] USD ($)	Dec. 31, 2014 Other Current Assets [Member] USD ($)	Mar. 31, 2015 Other Current Liabilities [Member] USD ($)
Note 11 - Financial Instruments (Details) [Line Items]
Derivative, Amount of Hedged Item		£ 40,000,000	60,000,000
Proceeds from Hedge, Investing Activities	4,812,000			4,800,000
Derivative Assets (Liabilities), at Fair Value, Net						272,000
Derivative Asset					958,000
Derivative Liability							$ 159,000