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Nature of Operations and Summary of Significant Accounting Policies - Revenue Recognition Method and Disaggregation of Revenue by Product Type and Geography (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Disaggregation of Revenue [Line Items]
Revenues	$ 221,649	$ 195,811	$ 448,129	$ 368,274
North America
Disaggregation of Revenue [Line Items]
Revenues	123,964	106,767	248,300	201,859
Europe
Disaggregation of Revenue [Line Items]
Revenues	52,249	55,827	110,615	100,468
Asia
Disaggregation of Revenue [Line Items]
Revenues	30,851	24,729	62,838	46,542
Rest of world
Disaggregation of Revenue [Line Items]
Revenues	14,585	8,488	26,376	19,405
Parts and consumables
Disaggregation of Revenue [Line Items]
Revenues	145,680	124,975	291,924	243,082
Capital
Disaggregation of Revenue [Line Items]
Revenues	75,969	70,836	156,205	125,192
Point in Time
Disaggregation of Revenue [Line Items]
Revenues	198,249	175,479	401,560	329,896
Over Time
Disaggregation of Revenue [Line Items]
Revenues	$ 23,400	$ 20,332	$ 46,569	$ 38,378

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