Acquisitions and Disposals - Summary of Components of Balance Sheet Accounts Classified as Assets and Liabilities of Discontinued Operations (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Assets:
Trade and other receivables, net	$ 11,673
Inventories	44,668
Prepaid expenses and other	206
Total current assets	56,547
Property and equipment, net	11,509
Total assets	68,056
Liabilities:
Current portion of capital lease obligations	1,289
Accounts payable	3,013
Accrued liabilities	1,466
Deferred revenue	4,505
Total current liabilities	10,273
Capital lease obligations, less current portion	4,075
Total liabilities	$ 14,348

The aggregate value (measured at the lower of net carrying value or fair value less cost of disposal) for assets of a disposal group, including a component of the entity (discontinued operation), to be sold or that has been disposed of through sale, as of the financial statement date.

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The aggregate value (measured at the lower of net carrying value or fair value less cost of disposal) for current assets (assets with expected useful life shorter than one year or one operating cycle, whichever is longer) of a disposal group, including a component of the entity (discontinued operation), to be sold or that has subsequently been disposed of through sale, as of the financial statement date.

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For the disposal group, including a component of the entity (discontinued operation), the aggregate of amounts due from customers or clients for goods or services that have been delivered or sold in the normal course of business and an amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection and net of any write-downs taken for collection uncertainty on the part of the holder, respectively.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

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Amount of accounts payable attributable to disposal group, due within one year or within the normal operating cycle if longer.

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Amount of accrued liabilities attributable to disposal group, due within one year or within the normal operating cycle if longer.

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Amount of deferred revenue attributable to disposal group, expected to be recognized within one year or within the normal operating cycle if longer.

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For the disposal group, including a component of the entity (discontinued operation), carrying amount of inventories (net of all valuation allowances and write-downs).

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For the disposal group, including a component of the entity (discontinued operation), obligations not otherwise itemized that are due within one year or operating cycle, if longer, from the balance sheet date.

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For the disposal group, including a component of the entity (discontinued operation), obligations not otherwise itemized that are due after one year or operating cycle, if longer, from the balance sheet date.

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Amount of prepaid and other assets attributable to disposal group, that are expected to be realized or consumed within one year or the normal operating cycle if longer.

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For the disposal group, including a component of the entity (discontinued operation), carrying value (net of accumulated depreciation and any write-downs) of tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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The obligations arising from the sale, disposal, or planned sale in the near future (generally within one year) of a disposal group, including a component of the entity (discontinued operation).

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Carrying value as of the balance sheet date of current obligations (due less than one year or one operating cycle, if longer) arising from the sale, disposal or planned sale in the near future (generally within one year) of a disposal group, including a component of the entity (discontinued operation).

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