Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2017	Sep. 30, 2016	Sep. 29, 2017	Sep. 30, 2016
Defined Benefit Plan Liability
Defined Benefit Plan Liability, Beginning	$ (1,475)	$ (1,179)	$ (1,475)	$ (1,179)
Defined Benefit Plan Liability, Ending	(1,475)	(1,179)	(1,475)	(1,179)
Cash Flow Hedges
Cash Flow Hedges, Beginning	4,601	(3,746)	1,420	(2,392)
Unrealized loss on cash flow hedges	633	(101)	3,414	(2,842)
Realized gain loss on foreign currency hedges - before tax	(1,106)	929	(362)	2,316
Realized gain loss on interest rate swaps - before tax	(49)	50	(393)	50
Cash Flow Hedges, End	4,079	(2,868)	4,079	(2,868)
Foreign Currency Translation Adjustment
Foreign Currency Translation Adjustment, Beginning	25,475	12,668	(15,660)	3,609
Net foreign currency translation gain (loss)	16,728	3,191	57,863	12,250
Foreign Currency Translation Adjustment, End	42,203	15,859	42,203	15,859
Total Pre-Tax Amount
Total Pre-Tax Amount, Beginning	28,601	7,743	(15,715)	38
Unrealized loss on cash flow hedges	633	(101)	3,414	(2,842)
Realized gain loss on foreign currency hedges - before tax	(1,106)	929	(362)	2,316
Realized gain loss on interest rate swaps - before tax	(49)	50	(393)	50
Net foreign currency translation gain (loss)	16,728	3,191	57,863	12,250
Total Pre-Tax Amount, End	44,807	11,812	44,807	11,812
Tax
Tax, Beginning	(1,398)	1,806	(285)	1,332
Unrealized gain (loss) on cash flow hedges	(222)	35	(1,195)	995
Realized gain loss on foreign currency contracts - tax	387	(324)	127	(810)
Realized gain loss on interest rate swap hedges - tax	18	(18)	138	(18)
Net foreign currency translation gain (loss)	0	0	0	0
Tax, End	(1,215)	1,499	(1,215)	1,499
Net-of-Tax Amount
Total Net-of-Tax Amount, Beginning	27,203	9,549	(16,000)	1,370
Unrealized gain (loss) on cash flow hedges, net of tax	411	(66)	2,219	(1,847)
Realized gain loss on foreign currency hedges, net of tax	(719)	605	(235)	1,506
Realized gain loss on interest rate swap hedges, net of tax	(31)	32	(255)	32
Foreign currency translation gain (loss)	16,728	3,191	57,863	12,250
Total Net-of-Tax Amount, End	$ 43,592	$ 13,311	$ 43,592	$ 13,311