Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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Amount, after tax, of cumulative translation adjustment attributable to gain (loss) on foreign currency derivatives that are designated as, and are effective as, economic hedges of a net investment in a foreign entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=64808268&loc=d3e32211-110900

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Amount of increase (decrease) in the cumulative translation adjustment from gain (loss), after tax, on foreign currency derivatives, that are designated as, and are effective as, economic hedges of a net investment in a foreign entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
-Subparagraph (b),(c),(d)
-URI http://asc.fasb.org/extlink&oid=64808268&loc=d3e32211-110900

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- Definition

Derivatives used in Net Investment Hedge, Before Tax

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Net Investment Hedge (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 24, 2016	Sep. 30, 2017	Sep. 24, 2016
Derivative [Line Items]
Realized gain on net investment hedge, before tax	$ 5,123		$ 5,123
Realized gain on net investment hedge, net of tax	3,150		3,150
Derivatives used in Net Investment Hedge, Net of Tax, Period Increase (Decrease)	(740)	$ 1,972	1,816	$ 4,897
Foreign Currency Forward Contract
Derivative [Line Items]
Derivative, notional amount		$ 44,000		$ 44,000
Australia, Dollars \| Foreign Currency Forward Contract
Derivative [Line Items]
Derivative, notional amount	27,000		27,000
United Kingdom, Pounds \| Foreign Currency Forward Contract
Derivative [Line Items]
Derivative, notional amount	$ 18,500		$ 18,500