Components of Accrued Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accrued Liabilities [Line Items]
Payroll and related benefits	$ 937	$ 798
Rent	362us-gaap_AccruedRentCurrent	436us-gaap_AccruedRentCurrent
Income and other taxes	400crv_AccruedIncomeTaxesAndOtherCurrent	393crv_AccruedIncomeTaxesAndOtherCurrent
Warranty reserve	762	737
Customer rebates	1,041crv_AccruedCustomerRebates	794crv_AccruedCustomerRebates
Other	644us-gaap_OtherAccruedLiabilitiesCurrent	551us-gaap_OtherAccruedLiabilitiesCurrent
Accrued liabilities current	$ 4,146us-gaap_AccruedLiabilitiesCurrent	$ 3,709us-gaap_AccruedLiabilitiesCurrent

Carrying value as of the balance sheet date of obligations incurred through that date and payable for contractual rent under lease arrangements. 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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Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. 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

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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