Note 9 - Derivative Instruments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Note 9 - Derivative Instruments (Details) [Line Items]
Revenues Denominated in U.S. Dollars, Percentage	25.00%		25.00%
Foreign Exchange Contract [Member]
Note 9 - Derivative Instruments (Details) [Line Items]
Derivative Asset, Notional Amount	$ 0		$ 0
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	178	130	163	650
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	$ 315	$ 111	$ 474	$ 334