Certain Balance Sheet Components

6 Months Ended

Jun. 30, 2022

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	June 30, 2022		December 31, 2021
Trade receivables (net of allowance of $5,630 and $5,730)	$	222,537	$	261,124
Unbilled receivables	37,120		37,335
Total accounts receivable, net	$	259,657	$	298,459

Allowance for credit losses account activity	Three Months Ended June 30,				Six Months Ended June 30,
In thousands	2022		2021		2022		2021
Beginning balance	$	5,598	$	1,136	$	5,730	$	1,312
Provision for (release of) doubtful accounts, net	619		25		518		(42)
Accounts recovered (written-off), net	(322)		(63)		(244)		(142)
Effect of change in exchange rates	(265)		9		(374)		(21)
Ending balance	$	5,630	$	1,107	$	5,630	$	1,107

Inventories
In thousands	June 30, 2022		December 31, 2021
Raw materials	$	138,519	$	122,434
Work in process	6,272		7,856
Finished goods	29,731		35,509
Total inventories	$	174,522	$	165,799

Property, plant, and equipment, net
In thousands	June 30, 2022		December 31, 2021
Machinery and equipment	$	299,761	$	314,502
Computers and software	112,470		111,540
Buildings, furniture, and improvements	134,272		131,764
Land	10,270		8,952
Construction in progress, including purchased equipment	29,832		39,527
Total cost	586,605		606,285
Accumulated depreciation	(435,942)		(443,101)
Property, plant, and equipment, net	$	150,663	$	163,184

Depreciation expense	Three Months Ended June 30,				Six Months Ended June 30,
In thousands	2022		2021		2022		2021
Depreciation expense	$	9,929	$	12,112	$	20,213	$	24,949