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Significant Accounting Policies - Insurance Reserves and Derivatives (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 29, 2019 | Dec. 30, 2018 | Dec. 31, 2017 | Apr. 28, 2019
Derivative Financial Instruments |  |  |  |
Other comprehensive income (loss), before tax | $ (10,783,000) | $ 4,254,000 | $ 1,421,000 |
Other comprehensive income (loss), net of tax | (8,300,000) | $ 3,200,000 | $ 900,000 |
Minimum |  |  |  |
Insurance Reserves |  |  |  |
Employee insurance retention limit per occurrence | 100,000 |  |  |
Maximum |  |  |  |
Insurance Reserves |  |  |  |
Employee insurance retention limit per occurrence | $ 1,000,000.0 |  |  |
Terminated interest rate swaps |  |  |  |
Derivative Financial Instruments |  |  |  |
Interest rate swap agreement, notional amount |  |  |  | $ 50,000,000.0

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- Definition The retention limit per occurrence for employee insurance programs funded by the reporting entity. + References No definition available. + Details
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- Definition Nominal or face amount used to calculate payments on the derivative liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959 + Details
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- Definition Amount before tax, after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580 + Details
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