CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012
Cash flows from operating activities:
Net loss	$ (83,863)us-gaap_NetIncomeLoss	$ (68,786)us-gaap_NetIncomeLoss	$ (79,887)us-gaap_NetIncomeLoss
Adjustments to reconcile net loss to net cash provided by operating activities:
(Gain) loss on sale of discontinued operations, net of taxes	(2,519)	(14,933)	6,260
Loss (income) from discontinued operations, net of taxes	63	(1,808)	(6,901)
Depreciation	52,207us-gaap_Depreciation	50,534us-gaap_Depreciation	50,777us-gaap_Depreciation
Amortization of intangible assets	11,781us-gaap_AmortizationOfIntangibleAssets	9,962us-gaap_AmortizationOfIntangibleAssets	9,881us-gaap_AmortizationOfIntangibleAssets
Non-cash interest expense, net	9,772us-gaap_AmortizationOfFinancingCosts	10,289us-gaap_AmortizationOfFinancingCosts	8,263us-gaap_AmortizationOfFinancingCosts
Deferred income taxes	1,165	(28,672)	(1,948)
Non-cash taxes	0	40,562	56,500
Gain on bargain purchase	0	(17,262)	0
Loss (gain) on sale of assets	127us-gaap_GainLossOnDispositionOfAssets1	(120)us-gaap_GainLossOnDispositionOfAssets1	(2,782)us-gaap_GainLossOnDispositionOfAssets1
Non-cash restructuring and other charges, net	4,946	2,622	11,226
Impairment of intangible assets	0	33,367	0
Loss on early extinguishment of debt, net	27,449	11,324	12,487
Provisions for bad debts	2,174us-gaap_ProvisionForDoubtfulAccounts	4,392us-gaap_ProvisionForDoubtfulAccounts	2,024us-gaap_ProvisionForDoubtfulAccounts
Provisions for inventory obsolescence	10,879us-gaap_InventoryWriteDown	6,523us-gaap_InventoryWriteDown	3,588us-gaap_InventoryWriteDown
Stock-based compensation provision	2,420us-gaap_ShareBasedCompensation	3,739us-gaap_ShareBasedCompensation	5,333us-gaap_ShareBasedCompensation
Gain on insurance claim	0	(2,670)	0
Changes in operating assets and liabilities, excluding the effects of acquired businesses:
Accounts receivable	(3,088)	(31,686)	26,594
Inventories	13,369us-gaap_IncreaseDecreaseInInventories	(40,622)us-gaap_IncreaseDecreaseInInventories	(617)us-gaap_IncreaseDecreaseInInventories
Accounts payable and accrued compensation and related liabilities	(5,652)	69,848	(13,291)
Other working capital changes	4,148	4,047	(29,050)
Other, net	(19,571)	(18,335)	(15,613)
Net cash provided by operating activities of continuing operations	25,807	22,315	42,844
Net cash (used in) provided by operating activities of discontinued operations	(1,892)	5,878	9,221
Net cash provided by operating activities	23,915	28,193	52,065
Cash flows from investing activities:
Cost of business acquisitions, net of cash acquired	0	(33,166)	(644)
Capital expenditures	(37,231)	(29,235)	(20,563)
Purchase of investment	(2,000)	(1,650)	(350)
Proceeds from insurance claim	0	3,036	0
Proceeds from sale of property, plant and equipment	3,767	8,304	7,978
Proceeds from sale of intangible asset	0	0	5,700
Net cash used in investing activities of continuing operations	(35,464)	(52,711)	(7,879)
Net cash provided by investing activities of discontinued operations	2,196	45,214	39,533
Net cash (used in) provided by investing activities	(33,268)	(7,497)	31,654
Cash flows from financing activities:
Proceeds from issuance of 6.000% senior secured priority notes due 2019	540,000	0	0
Proceeds from issuance of 8.500% junior secured priority notes due 2022	250,000	0	0
Repayment of 10.5% senior notes	0us-gaap_EarlyRepaymentOfSeniorDebt	0us-gaap_EarlyRepaymentOfSeniorDebt	(169,875)us-gaap_EarlyRepaymentOfSeniorDebt
Repayment of 7.875% senior subordinated notes	0	(67,848)	(214,831)
(Repayment) borrowing of Term Loan B due 2016	0	(388,205)	31,844
Repayment of 8.375% senior subordinated notes	0us-gaap_RepaymentsOfSubordinatedDebt	0us-gaap_RepaymentsOfSubordinatedDebt	(24,787)us-gaap_RepaymentsOfSubordinatedDebt
Payment of financing related costs and expenses and debt issuance discounts	(37,994)us-gaap_PaymentsOfDebtIssuanceCosts	(15,570)us-gaap_PaymentsOfDebtIssuanceCosts	(37,836)us-gaap_PaymentsOfDebtIssuanceCosts
Proceeds from issuance of other long-term debt	0	20,000	0
Repayments of other long-term debt	(8,493)us-gaap_RepaymentsOfOtherLongTermDebt	(7,865)us-gaap_RepaymentsOfOtherLongTermDebt	(4,846)us-gaap_RepaymentsOfOtherLongTermDebt
Proceeds from issuance of 11.5% senior notes due 2017	0cvo_ProceedsfromIssuanceofSeniorNotes	0cvo_ProceedsfromIssuanceofSeniorNotes	225,000cvo_ProceedsfromIssuanceofSeniorNotes
Repayment of 11.5% senior notes due 2017	(2,680)cvo_RepaymentsofSeniorNotes	0cvo_RepaymentsofSeniorNotes	0cvo_RepaymentsofSeniorNotes
Repayment of 8.500% junior secured priority notes due 2022	(2,000)	0	0
Purchase and retirement of common stock upon vesting of RSUs	(562)	(660)	(735)
Proceeds from issuance of 7% senior exchangeable notes due 2017	0us-gaap_ProceedsFromConvertibleDebt	0us-gaap_ProceedsFromConvertibleDebt	86,250us-gaap_ProceedsFromConvertibleDebt
(Repayment) borrowings under Revolving Credit Facility, net	0	(18,000)	18,000
Proceeds from issuance of 15% Unsecured Term Loan due 2017	0	50,000	0
Repayment of 15% Unsecured Term Loan due 2017	(10,000)us-gaap_RepaymentsOfUnsecuredDebt	(40,000)us-gaap_RepaymentsOfUnsecuredDebt	0us-gaap_RepaymentsOfUnsecuredDebt
Proceeds from exercise of stock options	20	98	0
Proceeds from issuance of Term Loan Facility due 2017	0	360,000	0
Repayment of Term Loan Facility due 2017	(329,100)us-gaap_RepaymentsOfLongTermDebt	(30,900)us-gaap_RepaymentsOfLongTermDebt	0us-gaap_RepaymentsOfLongTermDebt
Repayment of 8.875% senior second lien notes due 2018	(400,000)cvo_RepaymentsofSeniorSecondLienDebt	0cvo_RepaymentsofSeniorSecondLienDebt	0cvo_RepaymentsofSeniorSecondLienDebt
Borrowings under ABL Facility due 2017	520,100us-gaap_ProceedsFromLinesOfCredit	699,200us-gaap_ProceedsFromLinesOfCredit	0us-gaap_ProceedsFromLinesOfCredit
Repayments under ABL Facility due 2017	(506,800)us-gaap_RepaymentsOfLinesOfCredit	(577,800)us-gaap_RepaymentsOfLinesOfCredit	0us-gaap_RepaymentsOfLinesOfCredit
Net cash provided by (used in) financing activities of continuing operations	12,491	(17,550)	(91,816)
Net cash used in financing activities of discontinued operations	0	0	(1,652)
Net cash provided by (used in) financing activities	12,491	(17,550)	(93,468)
Effect of exchange rate changes on cash and cash equivalents	126	73	106
Net increase (decrease) in cash and cash equivalents	3,264	3,219	(9,643)
Cash and cash equivalents at beginning of period	11,329	8,110	17,753
Cash and cash equivalents at end of period	$ 14,593	$ 11,329	$ 8,110

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Charge to cost of goods sold that represents the reduction of the carrying amount of inventory, generally attributable to obsolescence or market conditions.

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Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The cash outflow to reacquire common stock during the period.

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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The cash outflow associated with other investments held by the entity for investment purposes not otherwise defined in the taxonomy.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

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The cash inflow from the amounts received by the insured under the terms of an insurance contract settlement. This element pertains only to insurance proceeds related to investments, for example fixed assets. It excludes insurance settlements classified as operating cash flows.

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The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

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Amount of cash inflow (outflow) from long-term debt wholly or partially secured by collateral. Excludes tax exempt secured debt.

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The cash inflow from disposal of asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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