Reportable Segments - Operating Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Segment revenues	$ 536,381	$ 463,526
Segment EBITDA	79,469	60,239
Depreciation expense	11,560	10,282
Amortization of intangibles	9,947	16,185
Amortization of software development intangible assets	689	330
Severance, restructuring, and acquisition integration costs	5,171	3,619
Adjustments related to acquisitions and divestitures		20
Segment assets	3,147,668	972,258	$ 3,139,734
Reportable Segment
Segment Reporting Information [Line Items]
Segment revenues	536,381	463,526
Segment EBITDA	79,469	60,239
Depreciation expense	11,560	10,282
Amortization of intangibles	9,947	16,185
Amortization of software development intangible assets	689	330
Severance, restructuring, and acquisition integration costs	5,171	3,619
Adjustments related to acquisitions and divestitures	621	20
Segment assets	1,059,327
Enterprise Solutions
Segment Reporting Information [Line Items]
Segment revenues	226,355	212,213
Segment EBITDA	28,106	24,712
Depreciation expense	5,350	5,081
Amortization of intangibles	4,336	5,504
Amortization of software development intangible assets	32	55
Severance, restructuring, and acquisition integration costs	1,915	2,550
Adjustments related to acquisitions and divestitures	6,286	20
Segment assets	476,742	503,658
Industrial Solutions
Segment Reporting Information [Line Items]
Segment revenues	310,026	251,313
Segment EBITDA	51,363	35,527
Depreciation expense	6,210	5,201
Amortization of intangibles	5,611	10,681
Amortization of software development intangible assets	657	275
Severance, restructuring, and acquisition integration costs	3,256	1,069
Adjustments related to acquisitions and divestitures	(6,907)	0
Segment assets	582,585	468,600
Affiliate revenues
Segment Reporting Information [Line Items]
Segment revenues	354	230
Affiliate revenues | Enterprise Solutions
Segment Reporting Information [Line Items]
Segment revenues	331	224
Affiliate revenues | Industrial Solutions
Segment Reporting Information [Line Items]
Segment revenues	$ 23	$ 6