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Balance Sheet Components (Tables)
 6 Months Ended
Jun. 30, 2021
Balance Sheet Related Disclosures [Abstract]  
Accounts Receivable, Net
Accounts receivable consists of the following:
June 30,
2021		December 31,
2020
Accounts receivable, gross$6,374 $4,713 
Less: allowance for doubtful accounts(23)(41)
Accounts receivable, net$6,351 $4,672 
Allowance for Doubtful Accounts
The following is the change in our allowance for doubtful accounts: 
 Six Months Ended
June 30,
 20212020
Balance at beginning of period$41 $23 
Additions charged (reductions credited)(18)11 
Balance at end of period$23 $34 
Inventories
Inventories consist of the following: 
June 30,
2021		December 31,
2020
Finished goods$741 $1,775 
Work-in-process836 670 
Inventories$1,577 $2,445 
Property and Equipment, Net
Property and equipment, net consists of the following:
June 30,
2021		December 31,
2020
Gross carrying amount$21,996 $22,291 
Less: accumulated depreciation and amortization(18,096)(17,188)
Property and equipment, net$3,900 $5,103 
Acquired Intangible Assets, Net Acquired intangible assets resulting from this transaction were assigned to Pixelworks, Inc., and consist of the following:
June 30,
2021		December 31,
2020
Developed technology$5,050 $5,050 
Customer relationships1,270 1,270 
Backlog and tradename410 410 
6,730 6,730 
Less: accumulated amortization(6,099)(5,523)
Acquired intangible assets, net$631 $1,207 
Future Amortization Expense As of June 30, 2021, future estimated amortization expense is as follows:
Six months ending December 31, 2021$541 
Year ending December 31, 202290 
$631 
Accrued Liabilities and Current Portion of Long-Term Liabilities
Accrued liabilities and current portion of long-term liabilities consist of the following:
June 30,
2021		December 31,
2020
Accrued payroll and related liabilities$2,952 $2,867 
Operating lease liabilities, current2,402 2,039 
Current portion of accrued liabilities for asset financings614 786 
Accrued interest payable362 429 
Accrued commissions and royalties294 474 
Deferred revenue68 179 
Accrued costs related to restructuring— 630 
Other2,053 2,048 
Accrued liabilities and current portion of long-term liabilities$8,745 $9,452 
Deferred Revenue
The change in deferred revenue is as follows:
 Six Months Ended
June 30,
 20212020
Deferred revenue:
Balance at beginning of period$179 $146 
Revenue recognized(683)(655)
Revenue deferred572 585 
Balance at end of period$68 $76