Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 24, 2020	Sep. 30, 2021	Sep. 24, 2020
Consolidated Statements of Comprehensive Income (Loss)
Amortization of the net actuarial loss and prior service credit related to the pension, net of tax effect	$ 84	$ 64	$ 256	$ 194
Fair market value adjustment of interest rate swap, net of tax benefit	4	10	0	358
Reclassification adjustment related to interest rate swap de-designation, net of tax effect	$ 42	$ 81	$ 153	$ 177

Amount after tax, before reclassification adjustments, in derivative on interest rate swap included in Interest Expense, net of tax realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges.

No definition available.

+ Details

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- Definition

Amount of tax (expense) benefit of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e640-108580

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- Definition

Amount, before reclassification, of tax expense (benefit) for gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e640-108580

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- References

No definition available.

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