Supplementary Balance Sheet Information

12 Months Ended

Dec. 31, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

10. Supplementary Balance Sheet Information

The following tables provide the details of selected balance sheet items as of the dates indicated (in thousands):

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


	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

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