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Debt - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Jul. 31, 2013
Minimum
Jul. 31, 2013
Maximum
Jul. 31, 2013
Before Extension
Jul. 31, 2013
After Extension
Dec. 31, 2013
Scenario 1
Jul. 31, 2013
Scenario 1
Minimum
Jul. 31, 2013
Scenario 1
Maximum
Dec. 31, 2013
Scenario 2
Jul. 31, 2013
Scenario 2
Minimum
Jul. 31, 2013
Scenario 2
Maximum
Dec. 31, 2013
Swingline Subfacility
Dec. 31, 2013
Letter of Credit
Dec. 31, 2013
Multicurrency borrowing sublimit
Debt Instrument [Line Items]                              
Revolving credit agreement maximum borrowing capacity $ 500,000                       $ 65,000 $ 50,000 $ 75,000
Revolving credit agreement maturity date         Apr. 27, 2017 Jul. 01, 2018                  
Basis spread             1.25% 0.875% 2.50% 0.25% 0.00% 1.50%      
Commitment fee percentage on unused portion of the commitment 0.175%   0.125% 0.35%                      
Outstanding amount under revolving credit agreement $ 230,044 $ 316,182