Certain Balance Sheet Components

12 Months Ended

Dec. 31, 2021

Balance Sheet Related Disclosures [Abstract]

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


Accounts receivable, net
In thousands	December 31, 2021		December 31, 2020
Trade receivables (net of allowance of $5,730 and $1,312)	$	261,124	$	318,269
Unbilled receivables	37,335		51,559
Total accounts receivable, net	$	298,459	$	369,828


Allowance for credit losses account activity	Year Ended December 31,
In thousands	2021		2020		2019
Beginning balance	$	1,312	$	3,064	$	6,331
Provision for (release of) doubtful accounts, net	4,636		(299)		(1,511)
Accounts written-off	(107)		(1,463)		(1,749)
Effect of change in exchange rates	(111)		10		(7)
Ending balance	$	5,730	$	1,312	$	3,064


Inventories
In thousands	December 31, 2021		December 31, 2020
Raw materials	$	122,434	$	114,058
Work in process	7,856		8,094
Finished goods	35,509		60,225
Total inventories	$	165,799	$	182,377


Property, plant, and equipment, net
In thousands	December 31, 2021		December 31, 2020
Machinery and equipment	$	314,502	$	334,050
Computers and software	111,540		115,776
Buildings, furniture, and improvements	131,764		155,676
Land	8,952		14,303
Construction in progress, including purchased equipment	39,527		31,425
Total cost	606,285		651,230
Accumulated depreciation	(443,101)		(443,414)
Property, plant, and equipment, net	$	163,184	$	207,816


Depreciation expense	Year Ended December 31,
In thousands	2021		2020		2019
Depreciation expense	$	48,352	$	52,579	$	50,114

On November 2, 2021, Itron entered into an agreement to sell certain of its Gas device businesses and operations to Dresser Utility Solutions (Dresser). The asset disposal group, which includes $0.8 million of accounts receivable, $15.4 million of inventories, and $12.0 million of property, plant, and equipment, was classified as held for sale during the fourth quarter of 2021. Refer to Note 18: Sale of Businesses for additional information on the transaction.