Segment Information - Operating Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 04, 2020	Sep. 29, 2019	Oct. 04, 2020	Sep. 29, 2019	Dec. 29, 2019
Segment Reporting Information [Line Items]
Net Sales	$ 278,642	$ 348,352	$ 826,315	$ 1,003,547
Depreciation and amortization	11,732	10,880	33,480	33,578
Total assets	1,305,775		1,305,775		$ 1,423,049
Operating Segments
Segment Reporting Information [Line Items]
Net Sales	278,642	348,352	826,315	1,003,547
Depreciation and amortization	10,055	9,528	28,919	29,650
Total assets	1,426,898		1,426,898
AMERICAS | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	142,858	195,900	452,171	563,776
Depreciation and amortization	3,554	3,238	9,623	9,789
Total assets	749,577		749,577
EUROPE | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	92,905	106,115	259,469	294,830
Depreciation and amortization	4,590	4,255	13,448	13,586
Total assets	491,155		491,155
ASIA- PACIFIC | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	42,879	46,337	114,675	144,941
Depreciation and amortization	1,911	$ 2,035	5,848	$ 6,275
Total assets	$ 186,166		$ 186,166