Note 6 - Foreign Currency Hedging (Detail) - Schedule of Foreign Currency Exchange Contracts Designated as Cash Flow Hedges (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Foreign Exchange Forward [Member] | Eurodollar Sell Forward Contract 1.400 [Member]
Settlemend Price ($ per Eurodollar)	1.400
Notional Amount	$ 25,150	$ 137,179
Fair Value	1,837	6,740
Notional Amount	25,150	137,179
Fair Value	1,837	6,740
Foreign Exchange Forward [Member] | Eurodollar Sell Forward Contract 1.200 [Member]
Settlemend Price ($ per Eurodollar)	1.200
Notional Amount	117,941	117,941
Fair Value	(9,783)	(12,810)
Notional Amount	117,941	117,941
Fair Value	(9,783)	(12,810)
Foreign Exchange Forward [Member]
Notional Amount	143,091	255,120
Fair Value	(7,946)	(6,070)
Notional Amount	143,091	255,120
Fair Value	(7,946)	(6,070)
Foreign Exchange Option [Member] | Eurodollar Purchased Call Option 1.510 [Member]
Notional Amount	27,126	147,957
Fair Value		772
Strike Price ($ per Eurodollar)	1.510
Notional Amount	27,126	147,957
Fair Value		772
Foreign Exchange Option [Member] | Eurodollar Purchased Call Option 1.315 [Member]
Notional Amount	129,244	129,244
Fair Value	5,001	10,251
Strike Price ($ per Eurodollar)	1.315
Notional Amount	129,244	129,244
Fair Value	5,001	10,251
Foreign Exchange Option [Member]
Notional Amount	156,370	277,201
Fair Value	5,001	11,023
Notional Amount	156,370	277,201
Fair Value	$ 5,001	$ 11,023