Accrued and Other Current Liabilities - Schedule of Accrued and Other Current Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Payables And Accruals [Abstract]
Employee benefits	$ 4,517us-gaap_AccruedEmployeeBenefitsCurrent	$ 8,278us-gaap_AccruedEmployeeBenefitsCurrent
Professional fees	1,379us-gaap_AccruedProfessionalFeesCurrent	951us-gaap_AccruedProfessionalFeesCurrent
Payables to affiliates	229us-gaap_DueToAffiliateCurrent	659us-gaap_DueToAffiliateCurrent
Other	1,700us-gaap_OtherLiabilitiesCurrent	1,633us-gaap_OtherLiabilitiesCurrent
Total	$ 7,825us-gaap_AccruedLiabilitiesCurrent	$ 11,521us-gaap_AccruedLiabilitiesCurrent

Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Amount of payable due to an entity that is affiliated with the reporting entity by means of direct or indirect ownership. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Aggregate carrying amount of current liabilities (due within one year or within the normal operating cycle if longer) not separately disclosed in the balance sheet. Includes costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed.

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