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DERIVATIVE FINANCIAL INSTRUMENTS (Details) lb in Millions | 9 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 26, 2020 USD ($) lb | Dec. 31, 2019 USD ($) lb | Mar. 31, 2018 USD ($)
Initial Swaps | Derivative contracts designated as hedging instruments |  |  |
Derivative Financial Instruments |  |  |
Aggregate notional amount | $ 240,500,000 |  | $ 260,000,000.0
Fixed rate (percentage) | 2.535% |  |
Additional Swaps | Derivative contracts designated as hedging instruments |  |  |
Derivative Financial Instruments |  |  |
Aggregate notional amount | $ 248,400,000 |  |
Fixed rate (percentage) | 1.061% |  |
Swaps |  |  |
Derivative Financial Instruments |  |  |
Unrealized gain (loss) recorded in AOCI | $ (7,600,000) | $ (1,900,000) |
Swaps | Derivative contracts designated as hedging instruments |  |  |
Derivative Financial Instruments |  |  |
Derivative liability | 10,000,000.0 |  |
Swaps | Derivative contracts designated as hedging instruments | Short-term Liability |  |  |
Derivative Financial Instruments |  |  |
Derivative liability | 3,500,000 |  |
Swaps | Derivative contracts designated as hedging instruments | Long-term Liability |  |  |
Derivative Financial Instruments |  |  |
Derivative liability |  | 2,500,000 |
FX Forward Contracts |  |  |
Derivative Financial Instruments |  |  |
Aggregate notional amount | 7,200,000 | 26,000,000.0 |
Commodity contracts |  |  |
Derivative Financial Instruments |  |  |
Unrealized gain (loss) recorded in AOCI | 700,000 | 300,000 |
Fair value of derivative contract - asset | 1,100,000 | $ 400,000 |
Gain (loss) to be reclassified over the next 12 months | $ 700,000 |  |
Commodity contracts | Derivative contracts designated as hedging instruments |  |  |
Derivative Financial Instruments |  |  |
Notional amount of commodity contracts (in pounds of copper) | lb | 3.9 | 3.4 |

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- Definition Amount, after tax, of accumulated gain (loss) on 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 11 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580 + Details
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- Definition The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121549185&loc=d3e80748-113994 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 + Details
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