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Condensed consolidated financial statement details
 9 Months Ended
Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Consolidated financial statement details
3. Condensed consolidated financial statement details
The following section provides details of selected balance sheet items.
Inventory
(in thousands)
September 30, 2022December 31, 2021
Components
$32,906 $10,761 
Finished goods
120,488 75,648 
Total inventory
$153,394 $86,409 
Property and equipment, net
(in thousands)
September 30, 2022December 31, 2021
Leasehold improvements$32,916 $33,764 
Production, engineering and other equipment46,289 45,641 
Tooling11,743 13,537 
Computers and software18,135 20,771 
Furniture and office equipment4,879 5,614 
Tradeshow equipment and other1,970 1,970 
Construction in progress511 480 
Gross property and equipment
116,443 121,777 
Less: Accumulated depreciation and amortization(101,142)(102,774)
Property and equipment, net
$15,301 $19,003 

Other long-term assets
(in thousands)
September 30, 2022December 31, 2021
Point of purchase (POP) displays
$2,177 $2,510 
Long-term deferred tax assets
275,456 274,430 
Deposits and other
8,876 8,237 
Intangible assets, net15 62 
Other long-term assets$286,524 $285,239 
Intangible assets are comprised of purchased technology, which have a useful life between 20-72 months, and an indefinite life asset. Amortization expense was zero and $0.1 million for the three months ended September 30, 2022 and 2021, and $0.1 million and $1.1 million for the nine months ended September 30, 2022 and 2021, respectively. As of September 30, 2022, all of the Company’s purchased technology intangible assets were fully amortized.
Accrued expenses and other current liabilities
(in thousands)
September 30, 2022December 31, 2021
Accrued liabilities$30,454 $34,989 
Accrued sales incentives
35,492 34,117 
Employee related liabilities4,497 19,024 
Return liability
5,401 9,263 
Warranty liability
7,631 8,268 
Inventory received
2,287 7,169 
Customer deposits
2,957 2,760 
Purchase order commitments
790 1,369 
Other
9,606 11,613 
Accrued expenses and other current liabilities$99,115 $128,572 

Product warranty
Three months ended September 30,Nine months ended September 30,
(in thousands)
2022202120222021
Beginning balance
$7,860 $7,621 $8,842 $8,523 
Charged to cost of revenue
5,801 4,560 13,049 11,329 
Settlement of warranty claims
(5,743)(4,272)(13,973)(11,943)
Warranty liability
$7,918 $7,909 $7,918 $7,909 
At September 30, 2022 and December 31, 2021, $7.6 million and $8.3 million, respectively, of the warranty liability was recorded as a component of accrued expenses and other current liabilities, and $0.3 million and $0.5 million, respectively, was recorded as a component of other long-term liabilities.