Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2011 Business_Unit	Dec. 31, 2009	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 13,431,000	$ 11,972,000	$ 21,336,000	$ 18,197,000
Initial tax holiday period						5 years
Initial tax holiday percentage						100.00%
Subsequent tax holiday period						5 years
Subsequent tax holiday percentage						50.00%
Number of new India business units in SEZs are eligible for income tax holidays benefit					3
Unrecognized tax benefits including interest and penalties	34,400,000		34,400,000				30,800,000
Unrecognized tax benefits	33,200,000		33,200,000				29,700,000
Accrued interest and penalties	5,400,000		5,400,000				4,200,000
Minimum [Member]
Income Tax Contingency [Line Items]
Decrease in unrecognized tax benefits			6,000,000
Maximum [Member]
Income Tax Contingency [Line Items]
Decrease in unrecognized tax benefits			$ 7,000,000