Supplementary Balance Sheet Information (Tables)

6 Months Ended

Jul. 02, 2021

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Inventories

Inventories

	July 2,		December 31,
	2021		2020
Raw materials	$	59,749	$	55,657
Work-in-process		16,933		15,487
Finished goods		17,164		20,234
Demo and consigned inventory		1,128		1,359
Total inventories	$	94,974	$	92,737

Accrued Expenses and Other Current Liabilities

Accrued Expenses and Other Current Liabilities

	July 2,		December 31,
	2021		2020
Accrued compensation and benefits	$	20,444	$	12,510
Accrued warranty		4,565		4,919
Contract liabilities, current portion		5,332		6,173
Finance lease obligations		582		9,720
Accrued earn-out and contingent considerations		11,874		10,796
Other		13,192		9,662
Total	$	55,989	$	53,780

Accrued Warranty

Accrued Warranty

	Six Months Ended
	July 2,			July 3,
	2021			2020
Balance at beginning of the period	$	4,919		$	5,756
Provision charged to cost of revenue		929			1,166
Use of provision		(1,254	)		(1,798	)
Foreign currency exchange rate changes		(29	)		(40	)
Balance at end of the period	$	4,565		$	5,084

Other Long Term Liabilities

Other Long Term Liabilities

	July 2,		December 31,
	2021		2020
Finance lease obligations	$	5,611	$	5,908
Accrued pension liabilities		734		1,511
Accrued contingent considerations		3,691		7,276
Other		2,398		2,471
Total	$	12,434	$	17,166