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Other Current Liabilities - Schedule of Other Current Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Other Liabilities Disclosure [Abstract]
Customer-related liabilities	$ 11,965	$ 13,444
Accrued sales commissions	1,790	2,146
Other	8,891	8,883
Other current liabilities	$ 22,646	$ 24,473

Carrying value as of the balance sheet date of obligations incurred through that date and payable for sales commissions. 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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