Other Current Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Other Current Liabilities [Line Items]
Amounts received in advance of revenue recognition	$ 17,186us-gaap_CustomerAdvancesCurrent	$ 10,434us-gaap_CustomerAdvancesCurrent
Amounts due to former customers	122us-gaap_CustomerDepositsCurrent	4,172us-gaap_CustomerDepositsCurrent
Other current liabilities	522us-gaap_OtherSundryLiabilitiesCurrent	530us-gaap_OtherSundryLiabilitiesCurrent
Other current liabilities	$ 17,830us-gaap_OtherLiabilitiesCurrent	$ 15,136us-gaap_OtherLiabilitiesCurrent

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The current portion of prepayments received from customers for goods or services to be provided in the future.

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The current portion of money or property received from customers which is either to be returned upon satisfactory contract completion or applied to customer receivables in accordance with the terms of the contract or the understandings.

+ References

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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.

+ References

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Obligations not otherwise itemized or categorized in the footnotes to the financial statements that are due within one year or operating cycle, if longer, from the balance sheet date.

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