Acquisitions - Schedule of Recognized Identifiable Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Aug. 03, 2020	Jan. 17, 2020	Jul. 02, 2018	Mar. 31, 2018	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Business Acquisition [Line Items]
Goodwill					$ 167,764	$ 153,276	$ 150,335
Wieland-Kessler LLC Asset Acquisition [Member]
Business Acquisition [Line Items]
Total consideration	$ 57,233
Accounts receivable	0
Inventories	25,106
Other current assets	0
Property, plant, and equipment	3,561
Operating lease right-of-use assets	10,526
Goodwill, tax deductible amount	11,710
Goodwill	11,710
Intangible assets	15,140
Other assets	0
Total assets acquired	66,043
Accounts payable	0
Other current liabilities	0
Long-term debt	0
Other noncurrent liabilities	0
Total liabilities assumed	8,810
Net assets acquired	57,233
Asset acquisition, cash paid	$ 57,200
Shoals Tubular, Inc. [Member]
Business Acquisition [Line Items]
Total consideration		$ 15,415
Accounts receivable		660
Inventories		1,809
Other current assets		26
Property, plant, and equipment		3,700
Operating lease right-of-use assets		0
Goodwill, tax deductible amount		1,964
Goodwill		1,964
Intangible assets		7,480
Other assets		0
Total assets acquired		15,639
Accounts payable		217
Other current liabilities		7
Long-term debt		0
Other noncurrent liabilities		0
Total liabilities assumed		224
Net assets acquired		$ 15,415
ATCO Rubber Product [Member]
Business Acquisition [Line Items]
Total consideration			$ 158,100
Accounts receivable			21,829
Inventories			31,666
Other current assets			1,051
Property, plant, and equipment			83,080
Operating lease right-of-use assets			0
Goodwill, tax deductible amount			17,236
Goodwill			17,236
Intangible assets			23,360
Other assets			224
Total assets acquired			178,446
Accounts payable			8,093
Other current liabilities			10,187
Long-term debt			2,066
Other noncurrent liabilities			0
Total liabilities assumed			20,346
Net assets acquired			$ 158,100
Die-Mold [Member]
Business Acquisition [Line Items]
Total consideration				$ 13,629
Accounts receivable				1,684
Inventories				1,833
Other current assets				267
Property, plant, and equipment				3,278
Operating lease right-of-use assets				0
Goodwill, tax deductible amount				4,239
Goodwill				4,239
Intangible assets				5,209
Other assets				0
Total assets acquired				16,510
Accounts payable				710
Other current liabilities				173
Long-term debt				0
Other noncurrent liabilities				1,998
Total liabilities assumed				2,881
Net assets acquired				$ 13,629