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Derivative Instruments - Pre-Tax Effects of the Peso Forward Contracts (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2017 | Jan. 01, 2017 | Dec. 31, 2017 | Jan. 01, 2017
Pre-tax effects of the Mexican peso forward contracts |  |  |  |
Realized Gain (Loss) | $ 201 | $ (576) | $ 659 | $ (806)
Unrealized Loss | (821) | (664) | (1,079) | (1,563)
Not Designated as Hedging Instrument | Other Income (Expense), Net |  |  |  |
Pre-tax effects of the Mexican peso forward contracts |  |  |  |
Realized Gain (Loss) | 201 | (576) | 659 | (806)
Unrealized Loss | $ (821) | $ (664) | $ (1,079) | $ (1,563)

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- Definition The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13(h)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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