Note 9 - Derivative Instruments, Effect of Derivative Contracts on Accumulated Other Comprehensive Income (Details) (Cash Flow Hedging [Member], Foreign Exchange Contract [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member]
Effect of Derivative Contracts on Accumulated Other Comprehensive Income:
Accumulated OCI - Foreign exchange contracts designated as cash flow hedges, beginning of period	$ 13,560	$ (4,821)
Amount of gain (loss) recognized in other comprehensive income (effective portion)	71,849	30,385
Amount of gain (loss) reclassified from accumulated other comprehensive income to income (effective portion)	13,560	12,004
Accumulated OCI - Foreign exchange contracts designated as cash flow hedges, end of period	$ 71,849	$ 13,560