Certain Balance Sheet Components (Tables)

6 Months Ended

Jun. 30, 2023

Balance Sheet Related Disclosures [Abstract]

Accounts Receivable, Net

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

Accounts receivable, net
In thousands	June 30, 2023		December 31, 2022
Trade receivables (net of allowance of $4,694 and $4,863)	$	284,598	$	249,771
Unbilled receivables	34,211		30,664
Total accounts receivable, net	$	318,809	$	280,435

Allowance for Credit Losses on Financing Receivables

Allowance for credit losses account activity	Three Months Ended June 30,				Six Months Ended June 30,
In thousands	2023		2022		2023		2022
Beginning balance	$	4,782	$	5,598	$	4,863	$	5,730
Provision for (release of) doubtful accounts, net	52		619		(39)		518
Accounts written-off, net	(178)		(322)		(244)		(244)
Effect of change in exchange rates	38		(265)		114		(374)
Ending balance	$	4,694	$	5,630	$	4,694	$	5,630

Inventories

Inventories
In thousands	June 30, 2023		December 31, 2022
Raw materials	$	217,508	$	182,118
Work in process	11,120		8,386
Finished goods	38,414		38,197
Total inventories	$	267,042	$	228,701

Property, Plant, and Equipment, Net

Property, plant, and equipment, net
In thousands	June 30, 2023		December 31, 2022
Machinery and equipment	$	314,495	$	306,699
Computers and software	121,873		119,670
Buildings, furniture, and improvements	131,247		130,301
Land	8,700		8,566
Construction in progress, including purchased equipment	18,800		19,403
Total cost	595,115		584,639
Accumulated depreciation	(462,467)		(444,516)
Property, plant, and equipment, net	$	132,648	$	140,123

Depreciation Expense

Depreciation expense	Three Months Ended June 30,				Six Months Ended June 30,
In thousands	2023		2022		2023		2022
Depreciation expense	$	9,183	$	9,929	$	18,598	$	20,213