Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity - Summary of Changes in Accumulated Other Comprehensive Income (Loss) (Detail)

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Shareholders' Equity - Summary of Changes in Accumulated Other Comprehensive Income (Loss) (Detail) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning Balance $ (31,695,000) $ (37,809,000)  
Other comprehensive income (loss) before reclassifications, net of tax 5,700,000,000    
Amounts reclassified from accumulated other comprehensive income (loss) to income, net of tax 6,200,000,000    
Total other comprehensive income (loss) 11,901,000 6,114,000 (10,524,000)
Ending balance (19,794,000) (31,695,000) (37,809,000)
Foreign Currency Translation Adjustments [Member]
      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning Balance (28,800,000)    
Other comprehensive income (loss) before reclassifications, net of tax 3,200,000    
Amounts reclassified from accumulated other comprehensive income (loss) to income, net of tax       
Total other comprehensive income (loss) 3,200,000    
Ending balance (25,600,000)    
Unrealized Gain (Loss) on Derivatives [Member]
      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning Balance (2,900,000)    
Other comprehensive income (loss) before reclassifications, net of tax 2,400,000    
Amounts reclassified from accumulated other comprehensive income (loss) to income, net of tax 6,200,000    
Total other comprehensive income (loss) 8,600,000    
Ending balance 5,700,000    
Unrealized Gain (Loss) on Available-For-Sale Investments [Member]
      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning Balance       
Other comprehensive income (loss) before reclassifications, net of tax 100,000    
Amounts reclassified from accumulated other comprehensive income (loss) to income, net of tax       
Total other comprehensive income (loss) 100,000    
Ending balance $ 100,000