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Effects of Foreign Currency Forward Contracts Designated as Cash Flow Hedges (Detail)

v2.4.0.8
Effects of Foreign Currency Forward Contracts Designated as Cash Flow Hedges (Detail) (Cash Flow Hedging, Foreign Exchange Forward, USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Cash Flow Hedging | Foreign Exchange Forward
              
Derivative Instruments, Gain (Loss) [Line Items]              
Gain recognized in other comprehensive income (loss) - effective portion         $ 11,685     
Loss recognized in other income (expense) - ineffective portion             (33,061)
Effect of derivative on consolidated financial statements         11,685    (33,061)
Gain (loss) recognized in other comprehensive loss- effective portion 8,747 1,723 (7,886) 1,723      
Gain (loss) recognized in other income (expense)- ineffective portion (2)   66        
Amount reclassified from accumulated other comprehensive income (loss) into depreciation expense $ (20)   $ (20)