Income Taxes - Additional Information (Detail) (USD $)			6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Minimum	Jun. 30, 2014 Maximum	Jun. 30, 2014 Foreign Tax Authority	Jun. 30, 2014 Domestic Tax Authority
Income Tax Contingency
Increase noncurrent deferred tax liabilities		$ 1,334,000
Estimated unrecognized tax benefits, decrease as a result of tax position taken in prior years	7,123,000
Expiration date of statute of limitations					2009	2010
Unrecognized tax benefits that would impact effective tax rate	$ 7,939,000
Open tax years			2009	2013