Financial Instruments Measured at Fair Value - Fair Value Hierarchy (Details) - USD ($) $ in Thousands		3 Months Ended
		Apr. 03, 2021	Mar. 28, 2020	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized Gain on Securities		$ 1,402
Unrealized Loss on Securities			$ 9,995
Equity Method Investment, Ownership Percentage		8.40%
Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents		$ 6,729		$ 6,062
Equity investments		50,493		45,879
Interest rate swaps designated as cash flow hedges - asset		68,503		20,983
Foreign exchange contracts designated as net investment hedges		21,949		12,760
Total Fair Value Assets And Liabilities Measured On Recurring Basis		147,674		85,684
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents	[1]	6,729		6,062
Equity investments	[2]	50,493		45,879
Interest rate swaps designated as cash flow hedges - asset		0		0
Foreign exchange contracts designated as net investment hedges		0		0
Total Fair Value Assets And Liabilities Measured On Recurring Basis		57,222		51,941
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents		0		0
Equity investments		0		0
Interest rate swaps designated as cash flow hedges - asset		68,503		20,983
Foreign exchange contracts designated as net investment hedges		21,949		12,760
Total Fair Value Assets And Liabilities Measured On Recurring Basis		90,452		33,743
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents		0		0
Equity investments		0		0
Interest rate swaps designated as cash flow hedges - asset		0		0
Foreign exchange contracts designated as net investment hedges		0		0
Total Fair Value Assets And Liabilities Measured On Recurring Basis		$ 0		$ 0

[1] Cash equivalents include highly liquid investments with an original maturity of less than three months.

[2] The company has an 8.4% equity ownership interest in Marubun Corporation and a portfolio of mutual funds with quoted market prices. The company recorded an unrealized gain of $1,402 and an unrealized loss of $9,995 for the first quarter of 2021 and 2020, respectively, on equity securities held at the end of the quarter.