Income Taxes (Income From Continuing Operations Before Tax) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Dec. 29, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 30, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Canada									$ 21,345	$ 19,552	$ 25,617
Foreign									45,003	100,805	103,804
Total income before income tax expense (benefit)	$ (5,498)	$ (20,429)	$ (35,384)	$ (5,037)	$ (16,590)	$ (31,695)	$ (43,588)	$ (28,484)	$ (66,348)	$ (120,357)	$ (129,421)

The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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-Name Accounting Standards Codification
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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

+ References

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The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

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