Reportable Segments - Operating Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 04, 2021	Jun. 28, 2020	Jul. 04, 2021	Jun. 28, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Segment revenues	$ 601,974	$ 424,811	$ 1,138,355	$ 888,337
Depreciation expense	11,400	10,300	22,900	20,600
Amortization of intangibles	9,102	16,017	19,049	32,202
Severance, restructuring, and acquisition integration costs	3,040	4,472	8,211	8,091
Segment assets	3,269,927		3,269,927		$ 3,139,734
Reportable Segment
Segment Reporting Information [Line Items]
Segment revenues	602,823	424,811	1,139,204	888,337
Segment EBITDA	92,000	48,680	171,469	108,919
Depreciation expense	11,367	10,332	22,927	20,614
Amortization of intangibles	9,102	16,017	19,049	32,202
Amortization of software development intangible assets	607	386	1,296	716
Severance, restructuring, and acquisition integration costs	3,040	4,472	8,211	8,091
Adjustments related to acquisitions and divestitures	1,912	105	2,533	125
Segment assets	1,147,960	967,629	1,147,960	967,629
Enterprise Solutions
Segment Reporting Information [Line Items]
Segment revenues	267,528	203,374	493,883	415,587
Severance, restructuring, and acquisition integration costs	2,460	2,423	4,375	4,973
Enterprise Solutions | Reportable Segment
Segment Reporting Information [Line Items]
Segment revenues	267,528	203,374	493,883	415,587
Segment EBITDA	35,269	22,231	63,375	46,943
Depreciation expense	5,365	5,122	10,715	10,203
Amortization of intangibles	4,439	5,354	8,775	10,858
Amortization of software development intangible assets	20	56	52	111
Severance, restructuring, and acquisition integration costs	2,460	2,423	4,375	4,973
Adjustments related to acquisitions and divestitures	(32)	105	(6,318)	125
Segment assets	522,635	502,767	522,635	502,767
Industrial Solutions
Segment Reporting Information [Line Items]
Segment revenues	334,446	221,437	644,472	472,750
Severance, restructuring, and acquisition integration costs	580	2,049	3,836	3,118
Industrial Solutions | Reportable Segment
Segment Reporting Information [Line Items]
Segment revenues	335,295	221,437	645,321	472,750
Segment EBITDA	56,731	26,449	108,094	61,976
Depreciation expense	6,002	5,210	12,212	10,411
Amortization of intangibles	4,663	10,663	10,274	21,344
Amortization of software development intangible assets	587	330	1,244	605
Severance, restructuring, and acquisition integration costs	580	2,049	3,836	3,118
Adjustments related to acquisitions and divestitures	1,944	0	8,851	0
Segment assets	$ 625,325	$ 464,862	$ 625,325	$ 464,862