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Schedule II-Valuation And Qualifying Accounts (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 25, 2021 | Dec. 26, 2020 | Dec. 28, 2019
Allowance for doubtful accounts |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at beginning of year | $ 1,538 | $ 770 | $ 836
Charged to costs and expenses | 1,216 | 1,208 | (81)
Other additions | 0 | 0 | 263
Deductions | 164 | 440 | 248
Balance at end of year | 2,590 | 1,538 | 770
Environmental reserves |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at beginning of year | 24,001 | 20,866 | 23,619
Charged to costs and expenses | 4,964 | 4,242 | 1,659
Other additions | 0 | 0 | 0
Deductions | 1,539 | 1,107 | 4,412
Balance at end of year | 27,426 | 24,001 | 20,866
Valuation allowance for deferred tax assets |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at beginning of year | 27,199 | 23,130 | 25,311
Charged to costs and expenses | 108 | 2,317 | 2,919
Other additions | 642 | 1,898 | 290
Deductions | 1,325 | 146 | 5,390
Balance at end of year | $ 26,624 | $ 27,199 | $ 23,130

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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(Column B)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 Reference 2: 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(Column E)) -URI http://asc.fasb.org/extlink&oid=120395691&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(Column D)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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