Note 2 - Summary of Significant Accounting Policies (Details) - Accumulated Other Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Investment Hedge Foreign Exchange Contract [Member]	Sep. 30, 2014 Investment Hedge Australian Denominated Debt [Member]	Dec. 31, 2013 Investment Hedge Australian Denominated Debt [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31, 2013			$ (6,625)
Balance at December 31, 2013					483	205	205
Balance at December 31, 2013			(5,937)
Total activity in 2014			(3,789)
Total activity in 2014					(196)
Total activity in 2014	(4,956)	3,046	(3,985)	(6,936)
Balance at September 30, 2014	(10,414)		(10,414)
Balance at September 30, 2014					287	205	205
Balance at September 30, 2014	(9,922)		(9,922)
Change during 2014:
Before-tax amount			(5,138)
Before-tax amount					(325)
Before-tax amount			(5,463)
Tax benefit			1,349
Tax benefit					129
Tax benefit			$ 1,478