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- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319

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- Definition

The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

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Income taxes (Narrative) (Details) - USD ($) $ in Thousands	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Income Tax Disclosure [Line Items]
Deferred tax assets, valuation allowance	$ 4,284	$ 6,219	$ 5,445
U.S. [Member] \| Scientific research investment tax credits [Member] \| Federal [Member]
Income Tax Disclosure [Line Items]
Tax credit carryforward, amount	1,500	600
U.S. [Member] \| Research and development tax credits [Member] \| State [Member]
Income Tax Disclosure [Line Items]
Tax credit carryforward, amount	900	900
U.S. [Member] \| Capital loss carryforward [Member] \| Federal [Member]
Income Tax Disclosure [Line Items]
Operating loss carryforwards	37,100	78,000
U.S. [Member] \| Capital loss carryforward [Member] \| State [Member]
Income Tax Disclosure [Line Items]
Operating loss carryforwards	8,700	14,400
Canada [Member] \| Capital loss carryforward [Member]
Income Tax Disclosure [Line Items]
Operating loss carryforwards	$ 27,900	$ 28,900