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Summary of Significant Accounting Policies - 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
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Assets: |
Trade and other receivables, net | $ 11,673 us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet
Inventories | 44,668 us-gaap_InventoriesPropertyHeldForSaleCurrent
Prepaid expenses and other | 206 us-gaap_DisposalGroupIncludingDiscontinuedOperationPrepaidAndOtherAssetsCurrent
Total current assets | 56,547 us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent
Property and equipment, net | 11,509 us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNoncurrent
Total assets | 68,056 us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation
Liabilities: |
Current portion of capital lease obligations | 1,289 us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities
Accounts payable | 3,013 us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayableCurrent
Accrued liabilities | 1,466 us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilitiesCurrent
Deferred revenue | 4,505 us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredRevenueCurrent
Total current liabilities | 10,273 us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent
Capital lease obligations, less current portion | 4,075 us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities
Total liabilities | $ 14,348 us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation

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