Acquisitions - Additional Information (Details) € in Thousands						3 Months Ended	5 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended
	Oct. 30, 2017 USD ($)	Aug. 14, 2017 USD ($)	Jul. 05, 2017 USD ($) facility	Apr. 04, 2016 USD ($)	Apr. 04, 2016 EUR (€)	Dec. 30, 2017 USD ($)	Dec. 30, 2017 USD ($)	Dec. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)	Jan. 02, 2016 USD ($)
Business Acquisition [Line Items]
Acquisition transaction costs										$ 5,375,000	$ 1,832,000
Goodwill						$ 268,001,000	$ 268,001,000	$ 268,001,000	$ 151,455,000	268,001,000	151,455,000	$ 119,051,000
Payments to acquire businesses, net										204,731,000	56,617,000	0
Increase to goodwill										$ 1,282,000
Weighted average useful life of acquired intangible assets										12 years
Cash payments in acquisition										$ 206,950,000	$ 58,894,000	$ 0
Revolving credit facility | Canadian Denominated Borrowing
Business Acquisition [Line Items]
Proceeds from revolving credit facility										70,691,000
Revolving credit facility | Euro-Denominated Borrowing
Business Acquisition [Line Items]
Proceeds from revolving credit facility				$ 29,866,000						$ 61,769,000
Unaflex
Business Acquisition [Line Items]
Cash Paid to Seller Borrowed Under the Revolving Credit Facility		$ 31,274,000
Revenues reported by acquired entity		17,494,000
Goodwill		$ 15,657,000
Revenue from the date of acquisition							7,335,000
Operating income from date of acquisition							187,000
Amortization expense							$ 176,000
Weighted average useful life of acquired intangible assets		10 years
Cash payments in acquisition		$ 0
NII FPG
Business Acquisition [Line Items]
Cash Paid to Seller Borrowed Under the Revolving Credit Facility			$ 170,018,000
Revenues reported by acquired entity			81,000,000
Goodwill			85,508,000
Revenue from the date of acquisition								48,363,000
Operating income from date of acquisition								1,238,000
Amortization expense								$ 6,399,000
Payments to acquire businesses, net			$ 170,792,000
Number of primary manufacturing facilities | facility			2
Goodwill, expected tax deductible amount			$ 33,228,000
Weighted average useful life of acquired intangible assets			12 years
Cash payments in acquisition			$ 2,993,000
NII FPG | Product technology
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets			15 years
NII FPG | Customer relationships
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets			11 years
NII FPG | Other intangibles
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets			4 years
NII FPG | Revolving credit facility | Canadian Denominated Borrowing
Business Acquisition [Line Items]
Cash Paid to Seller Borrowed Under the Revolving Credit Facility			$ 62,690,000
NII FPG | Revolving credit facility | Euro-Denominated Borrowing
Business Acquisition [Line Items]
Cash Paid to Seller Borrowed Under the Revolving Credit Facility			$ 61,769,000
Other
Business Acquisition [Line Items]
Cash Paid to Seller Borrowed Under the Revolving Credit Facility	$ 2,500,000					$ 2,500,000
Goodwill	716,000
Cash payments in acquisition	$ 0
Other | Customer relationships
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets	11 years
PAAL
Business Acquisition [Line Items]
Cash Paid to Seller Borrowed Under the Revolving Credit Facility				29,866,000
Goodwill				38,552,000
Revenue from the date of acquisition									40,783,000
Operating income from date of acquisition									2,372,000
Amortization expense									$ 1,926,000
Payments to acquire businesses, net				56,617,000	€ 49,713
Weighted average useful life of acquired intangible assets										12 years
Cash payments in acquisition				$ 29,193,000						$ 165,000
PAAL | Product technology
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets										9 years
PAAL | Customer relationships
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets										13 years
PAAL | Tradenames
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets										14 years
PAAL | Other intangibles
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets										7 years