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Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 28, 2018 | Dec. 29, 2017 | Dec. 30, 2016
SEC Schedule, 12-09, Allowance, Credit Loss [Member] |  |  |  |  |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |  |  |  |
Balance at Beginning of Period |  | $ 536 |  | $ 475 |  | $ 639 |
Charged to Costs & Expenses |  | 169 |  | 194 |  | (90) |
Charged to Other Accounts | [1] | (2) |  | 0 |  | 0 | [2]
Deductions | [3] | 111 |  | 133 |  | 74 |
Balance at End of Period |  | 592 |  | 536 |  | 475 |
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member] |  |  |  |  |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |  |  |  |
Balance at Beginning of Period |  | 36,480 |  | 35,391 |  | 39,171 |
Charged to Costs & Expenses | [4] | 0 |  | 3,284 |  | 641 |
Charged to Other Accounts | [1] | (170) |  | 0 | [2] | (5,135) | [2]
Deductions | [5] | 1,971 | [3] | 2,195 |  | 714 |
Balance at End of Period |  | $ 34,339 |  | $ 36,480 |  | $ 35,391 |
[1] | (4) Accounts written off.
[2] | (3) Amount represents measurement-period adjustments related to the acquisition of LRM.
[3] | (2) Includes foreign currency translation effect
[4] | Valuation allowance recorded in the provision for income taxes for certain net operating losses and tax credits. The decrease in 2018 includes the impact of the divestiture of the AS&O Product Lines. The increase in 2017 includes the impact of the adoption of the Tax Reform Act, which increased the value of our state deferred tax assets to which a corresponding valuation allowance was recorded.
[5] | Includes return to provision adjustments for prior years.

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- Definition Amount of decrease in valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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