Certain Balance Sheet Components

9 Months Ended

Sep. 30, 2023

Balance Sheet Related Disclosures [Abstract]

Certain Balance Sheet Components

Certain Balance Sheet Components

A summary of accounts receivable from contracts with customers is as follows:

Accounts receivable, net
In thousands	September 30, 2023		December 31, 2022
Trade receivables (net of allowance of $4,643 and $4,863)	$	289,637	$	249,771
Unbilled receivables	28,467		30,664
Total accounts receivable, net	$	318,104	$	280,435

Allowance for credit losses account activity	Three Months Ended September 30,				Nine Months Ended September 30,
In thousands	2023		2022		2023		2022
Beginning balance	$	4,694	$	5,630	$	4,863	$	5,730
Provision for (release of) doubtful accounts, net	76		(1,062)		37		(544)
Accounts written-off, net	(60)		(214)		(304)		(458)
Effect of change in exchange rates	(67)		152		47		(222)
Ending balance	$	4,643	$	4,506	$	4,643	$	4,506

Inventories
In thousands	September 30, 2023		December 31, 2022
Raw materials	$	216,316	$	182,118
Work in process	12,606		8,386
Finished goods	47,177		38,197
Total inventories	$	276,099	$	228,701

Property, plant, and equipment, net
In thousands	September 30, 2023		December 31, 2022
Machinery and equipment	$	312,529	$	306,699
Computers and software	123,198		119,670
Buildings, furniture, and improvements	129,755		130,301
Land	8,513		8,566
Construction in progress, including purchased equipment	20,634		19,403
Total cost	594,629		584,639
Accumulated depreciation	(464,915)		(444,516)
Property, plant, and equipment, net	$	129,714	$	140,123

Depreciation expense	Three Months Ended September 30,				Nine Months Ended September 30,
In thousands	2023		2022		2023		2022
Depreciation expense	$	8,982	$	10,948	$	27,580	$	31,161