Supplementary Balance Sheet Information (Tables)

12 Months Ended

Dec. 31, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Inventories

Inventories

	December 31,
	2022		2021
Raw materials	$	118,292	$	84,038
Work-in-process		23,328		20,600
Finished goods		25,738		19,486
Demo and consigned inventory		639		1,533
Total inventories	$	167,997	$	125,657

Property, Plant and Equipment, Net

Property, Plant and Equipment, Net

	December 31,
	2022			2021
Cost:
Land, buildings and improvements	$	86,026		$	78,906
Machinery and equipment		110,212			98,687
Total cost		196,238			177,593
Accumulated depreciation		(93,052	)		(90,154	)
Property, plant and equipment, net	$	103,186		$	87,439

Summary of Depreciation Expense on Property, Plant and Equipment, Including Demo Units and Assets under Finance Leases

The following table summarizes depreciation expense on property, plant and equipment, including demo units and assets under finance leases (in thousands):

	Year Ended December 31,
	2022		2021		2020
Depreciation expense	$	13,550	$	13,529	$	13,200

Accrued Expenses and Other Current Liabilities

The following table summarizes accrued expenses and other current liabilities as of the dates indicated (in thousands):

	December 31,
	2022		2021
Accrued compensation and benefits	$	35,501	$	24,725
Accrued contingent considerations and earn-outs		124		47,522
Finance lease obligations		668		599
Contract liabilities, current portion		8,128		6,995
Accrued warranty		5,127		4,783
Other		13,496		13,855
Total	$	63,044	$	98,479

Accrued Warranty

The following table summarizes changes in accrued warranty for the periods indicated (in thousands):

	Year Ended December 31,
	2022			2021			2020
Balance at beginning of year	$	4,783		$	4,919		$	5,756
Provision charged to cost of revenue		3,071			1,410			1,838
Warranty liabilities acquired from acquisitions		—			874			—
Use of provision		(2,615	)		(2,326	)		(2,805	)
Foreign currency exchange rate changes		(112	)		(94	)		130
Balance at end of year	$	5,127		$	4,783		$	4,919

Other Long Term Liabilities

The following table summarizes other long term liabilities as of the dates indicated (in thousands):

	December 31,
	2022		2021
Finance lease obligations	$	4,652	$	5,309
Accrued contingent considerations and earn-outs		301		3,402
Other		1,132		927
Total	$	6,085	$	9,638