Income (Loss) Per Share (Computation of Basic and Diluted Income (Loss) per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 28, 2015	Mar. 29, 2014
Earnings Per Share [Abstract]
Loss from continuing operations	$ (7,647)	$ (16,787)
(Loss) income from discontinued operations, net of taxes	(32)	953
Net loss	$ (7,679)us-gaap_NetIncomeLoss	$ (15,834)us-gaap_NetIncomeLoss
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Basic shares	67,746	66,336
Dilutive effect of 7% Notes (shares)	0	0
Dilutive effect of Equity Awards (shares)	0	0
Diluted shares	67,746	66,336
(Loss) income per share – basic:
Continuing operations per share - basic	$ (0.11)	$ (0.25)
Discontinued operations per share - basic	$ 0.00	$ 0.01
Net loss per share - basic	$ (0.11)us-gaap_EarningsPerShareBasic	$ (0.24)us-gaap_EarningsPerShareBasic
(Loss) income per share – diluted:
Continuing operations per share - diluted	$ (0.11)	$ (0.25)
Discontinued operations per share - diluted	$ 0.00	$ 0.01
Net loss per share - diluted	$ (0.11)us-gaap_EarningsPerShareDiluted	$ (0.24)us-gaap_EarningsPerShareDiluted

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Amount of income (loss) from continuing operations attributable to the parent. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests.

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The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Per basic share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation.

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Per diluted share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible debt securities using the if-converted method.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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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 average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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