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DERIVATIVE FINANCIAL INSTRUMENTS (Details) lb in Millions | 9 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 29, 2018 USD ($) lb | Dec. 31, 2017 USD ($) lb | Jul. 02, 2016
Interest Rate Swap, Through December 2021 |  |  |
Derivative Financial Instruments |  |  |
Unrealized gain (losses), net of tax, recorded in AOCI | $ 200,000 |  |
Interest Rate Swap, Through December 2021 | Derivative contracts designated as hedging instruments |  |  |
Derivative Financial Instruments |  |  |
Aggregate notional amount | 260,000,000 |  |
Long-term asset to recognize fair value of swaps | 300,000 |  |
Interest Rate Swap, Through December 2021 | Derivative contracts designated as hedging instruments | Term loan |  |  |
Derivative Financial Instruments |  |  |
Fixed rate (percentage) |  |  | 2.535%
FX Forward Contracts |  |  |
Derivative Financial Instruments |  |  |
Aggregate notional amount | 14,200,000 | $ 9,000,000 |
Unrealized gain (losses), net of tax, recorded in AOCI | 0 | 0 |
FX embedded derivatives | Derivative contracts not designated as hedging instruments |  |  |
Derivative Financial Instruments |  |  |
Aggregate notional amount | 600,000 | 1,100,000 |
Commodity Contracts |  |  |
Derivative Financial Instruments |  |  |
Unrealized gain (losses), net of tax, recorded in AOCI | (500,000) | 800,000 |
Fair value of derivative contract - liability | $ 700,000 |  |
Fair value of derivative contract - current asset |  | $ 1,100,000 |
Commodity Contracts | Derivative contracts designated as hedging instruments |  |  |
Derivative Financial Instruments |  |  |
Notional amount of commodity contracts (in pounds of copper) | lb | 3.9 | 3.6 |

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