Quarterly report pursuant to Section 13 or 15(d)

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

v2.4.0.8
Shareholders' Equity - Summary of Changes in Accumulated Other Comprehensive Income (Loss) (Detail) (USD $)
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance $ (19,794,000)  
Other comprehensive income (loss) before reclassifications, net of tax (4,400,000)  
Amounts reclassified from accumulated other comprehensive income (loss) to income, net of tax 1,700,000  
Total other comprehensive income (loss) (2,691,000) (10,016,000)
Ending balance (22,485,000)  
Foreign Currency Translation Adjustments [Member]
    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (25,600,000)  
Other comprehensive income (loss) before reclassifications, net of tax (2,200,000)  
Total other comprehensive income (loss) (2,200,000)  
Ending balance (27,800,000)  
Unrealized Gain (Loss) on Derivatives [Member]
    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance 5,700,000  
Other comprehensive income (loss) before reclassifications, net of tax (100,000)  
Amounts reclassified from accumulated other comprehensive income (loss) to income, net of tax (300,000)  
Total other comprehensive income (loss) (400,000)  
Ending balance 5,300,000  
Unrealized Gain (Loss) on Available-For-Sale Investments [Member]
    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance 100,000  
Other comprehensive income (loss) before reclassifications, net of tax (2,100,000)  
Amounts reclassified from accumulated other comprehensive income (loss) to income, net of tax 2,000,000  
Total other comprehensive income (loss) $ (100,000)