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
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

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

Assets:

$ 11,673us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet

Inventories

44,668us-gaap_InventoriesPropertyHeldForSaleCurrent

Prepaid expenses and other

206us-gaap_DisposalGroupIncludingDiscontinuedOperationPrepaidAndOtherAssetsCurrent

Total current assets

56,547us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent

Property and equipment, net

11,509us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNoncurrent

Total assets

68,056us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation

Liabilities:

Current portion of capital lease obligations

1,289us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherCurrentLiabilities

Accounts payable

3,013us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayableCurrent

Accrued liabilities

1,466us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilitiesCurrent

Deferred revenue

4,505us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredRevenueCurrent

Total current liabilities

10,273us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent

Capital lease obligations, less current portion

4,075us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities

Total liabilities

$ 14,348us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation

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