Supplementary Balance Sheet Information

12 Months Ended

Dec. 31, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Supplementary Balance Sheet Information

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,
	2023		2022
Raw materials	$	104,643	$	118,292
Work-in-process		21,010		23,328
Finished goods		23,311		25,738
Demo and consigned inventory		407		639
Total inventories	$	149,371	$	167,997

Property, Plant and Equipment, Net

	December 31,
	2023			2022
Cost:
Land, buildings and improvements	$	95,020		$	86,026
Machinery and equipment		117,487			110,212
Total cost		212,507			196,238
Accumulated depreciation		(103,058	)		(93,052	)
Property, plant and equipment, net	$	109,449		$	103,186

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,
	2023		2022		2021
Depreciation expense	$	14,017	$	13,550	$	13,529

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,
	2023		2022
Accrued compensation and benefits	$	32,703	$	35,501
Finance lease obligations		718		668
Contract liabilities, current portion		5,553		8,128
Accrued warranty		5,292		5,127
Other		16,790		13,620
Total	$	61,056	$	63,044

Accrued Warranty

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

	Year Ended December 31,
	2023			2022			2021
Balance at beginning of year	$	5,127		$	4,783		$	4,919
Provision charged to cost of revenue		2,445			3,071			1,410
Warranty liabilities acquired from acquisitions		—			—			874
Use of provision		(2,338	)		(2,615	)		(2,326	)
Foreign currency exchange rate changes		58			(112	)		(94	)
Balance at end of year	$	5,292		$	5,127		$	4,783

Other Long-term Liabilities

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

	December 31,
	2023		2022
Finance lease obligations	$	3,934	$	4,652
Accrued contingent considerations and earn-outs		311		301
Other		1,687		1,132
Total	$	5,932	$	6,085