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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
	Apr. 02, 2022	Apr. 03, 2021
Disaggregation of Revenue [Line Items]
Revenues	$ 226,480	$ 172,463
North America
Disaggregation of Revenue [Line Items]
Revenues	124,336	95,092
Europe
Disaggregation of Revenue [Line Items]
Revenues	58,366	44,641
Asia
Disaggregation of Revenue [Line Items]
Revenues	31,987	21,813
Rest of world
Disaggregation of Revenue [Line Items]
Revenues	11,791	10,917
Parts and consumables
Disaggregation of Revenue [Line Items]
Revenues	146,244	118,107
Capital
Disaggregation of Revenue [Line Items]
Revenues	80,236	54,356
Point in Time
Disaggregation of Revenue [Line Items]
Revenues	203,311	154,417
Over Time
Disaggregation of Revenue [Line Items]
Revenues	$ 23,169	$ 18,046

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