Quarterly report pursuant to Section 13 or 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 $)
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Accumulated Other Comprehensive Income Loss [Line Items]    
Beginning Balance $ (31,695,000)  
Other comprehensive income (loss) before reclassifications, net of tax (11,600,000)  
Amounts reclassified from accumulated other comprehensive income (loss) to income, net of tax 1,600,000 [1]  
Total other comprehensive income (loss), net of reclassifications (10,016,000) 9,497,000
Ending balance (41,711,000)  
Foreign Currency Translation Adjustment [Member]
    
Accumulated Other Comprehensive Income Loss [Line Items]    
Beginning Balance (28,800,000)  
Other comprehensive income (loss) before reclassifications, net of tax (8,700,000)  
Total other comprehensive income (loss), net of reclassifications (8,700,000)  
Ending balance (37,500,000)  
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 (2,900,000)  
Amounts reclassified from accumulated other comprehensive income (loss) to income, net of tax 1,600,000 [1]  
Total other comprehensive income (loss), net of reclassifications (1,300,000)  
Ending balance $ (4,200,000)  
[1] See Note 9, Derivative Instruments and Hedging Activities, for information regarding the location in the condensed consolidated statements of income of gains (losses) reclassified from accumulated other comprehensive income (loss) into income during the three months ended March 31, 2013.