Supplementary Balance Sheet Information (Tables)

9 Months Ended

Oct. 01, 2021

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Inventories

Inventories

	October 1,		December 31,
	2021		2020
Raw materials	$	75,445	$	55,657
Work-in-process		21,409		15,487
Finished goods		20,781		20,234
Demo and consigned inventory		1,787		1,359
Total inventories	$	119,422	$	92,737

Accrued Expenses and Other Current Liabilities

Accrued Expenses and Other Current Liabilities

	October 1,			December 31,
	2021			2020
Accrued compensation and benefits	$	20,546	$		12,510
Accrued warranty		4,527			4,919
Contract liabilities, current portion		9,190			6,173
Finance lease obligations		590			9,720
Accrued earn-out and contingent considerations		55,469			10,796
Other		14,184			9,662
Total	$	104,506	$		53,780

Accrued Warranty

Accrued Warranty

	Nine Months Ended
	October 1,			October 2,
	2021			2020
Balance at beginning of the period	$	4,919		$	5,756
Provision charged to cost of revenue		1,215			1,255
Warranty liabilities acquired from acquisitions		541			—
Use of provision		(2,075	)		(1,941	)
Foreign currency exchange rate changes		(73	)		32
Balance at end of the period	$	4,527		$	5,102

Other Long Term Liabilities

Other Long Term Liabilities

	October 1,		December 31,
	2021		2020
Finance lease obligations	$	5,461	$	5,908
Accrued pension liabilities		326		1,511
Accrued contingent considerations		3,605		7,276
Other		2,352		2,471
Total	$	11,744	$	17,166