Income Taxes - Schedule of Amounts Reported in Balance Sheet (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Net current deferred tax assets included in other current assets	$ 1,066	$ 699
Net non-current deferred tax assets	3,003	66
Net current deferred tax liabilities included in accounts payable and accrued expenses	(1,739)us-gaap_DeferredTaxLiabilitiesCurrent
Net non-current deferred tax liabilities	(26,365)	(30,009)
Net deferred liabilities	$ (24,035)us-gaap_DeferredTaxAssetsLiabilitiesNet	$ (29,944)us-gaap_DeferredTaxAssetsLiabilitiesNet

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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