Revenue from Contracts with Customers | Note 3. Revenue from Contracts with Customers Disaggregation of Revenue The following table summarizes the Company’s product and service revenue disaggregated by geographic region, which is determined based on customer location, for the three and six months ended June 30, 2024 and 2023: Three Months Ended Six Months Ended 2024 2023 2024 2023 United States $ 7,679 $ 7,105 $ 13,689 $ 11,369 South Korea 304 16 582 25 Europe 1,669 1,983 3,084 3,521 Asia (excluding South Korea) 988 1,128 1,872 1,836 Other 44 89 98 193 Total 1 $ 10,684 $ 10,321 $ 19,325 $ 16,944 1 The table above does not include lease revenue of $ 1,952 and $ 1,691 for the three months ended June 30, 2024 and 2023, respectively, and $ 3,899 and $ 3,320 for the six months ended June 30, 2024 and 2023, respectively. Substantially all lease revenue originates from the United States. Refer to Note 6, Leases . Contract Balances The following table provides information about receivables and contract liabilities from contracts with customers: Classification As of As of Accounts receivable, current Accounts receivable, net $ 5,893 $ 4,001 Notes receivable, current Notes receivable, net $ 337 $ 323 Notes receivable, long-term Notes and other receivables, long-term, net $ 1,067 $ 1,279 Contract asset, current Prepaid and other current assets $ 626 $ 982 Deferred revenue, current Deferred revenue $ 1,414 $ 1,349 Deferred revenue, non-current Other long-term liabilities $ 260 $ 350 Contract liability, long-term Other long-term liabilities $ — $ 220 Accounts Receivables, Net – Accounts receivables, net, include amounts billed and due from customers. The amounts due are stated at their net estimated realizable value and are classified as current or noncurrent based on the timing of when the Company expects to receive payment. Most customers are on pre-paid or 30 -day payment terms, depending on the product purchased. The Company maintains an allowance for expected credit losses to provide for the estimated amount of receivables that will not be collected. The allowance is based upon an assessment of customer credit worthiness, historical payment experience, the age of outstanding receivables, collateral to the extent applicable and reflects the possible impact of current conditions and reasonable forecasts not already reflected in historical loss information. The following table summarizes the activity in the allowance for credit losses: Amount Accounts receivable, allowance for credit losses as of $ 62 Change in provision for credit losses ( 6 ) Write-offs — Accounts receivable, allowance for credit losses as of $ 56 Accounts receivable, allowance for credit losses as of $ 56 Change in provision for credit losses ( 26 ) Write-offs — Accounts receivable, allowance for credit losses as of $ 30 Notes Receivables, Net – Notes receivable, net includes amounts billed and due from customers under extended payment terms with a significant financing component. Interest rates on notes receivable range from 7.0 % to 8.0 %. The Company recorded interest income on notes receivable during the three months ended June 30, 2024 and 2023 of $ 27 and $ 20 , respectively, and during the six months ended June 30, 2024 and 2023 of $ 56 and $ 32 , respectively, in other income, net in the statement of operations. The following table summarizes the activity in the allowance for notes receivable: Amount Notes receivable, allowance for credit losses as of $ 33 Change in provision for credit losses ( 4 ) Write-offs — Notes receivable, allowance for credit losses as of $ 29 Notes receivable, allowance for credit losses as of $ 13 Change in provision for credit losses 24 Write-offs — Notes receivable, allowance for credit losses as of $ 37 Contract Assets – The Company's contract assets represent revenue recognized for performance obligations completed before an unconditional right to payment exists, and therefore invoicing has not yet occurred. The Company classifies contract assets in prepaid and other current assets in the Company's condensed balance sheets. The following table provides information about contract assets from contracts with customers: Amount Contract assets as of December 31, 2023 $ 982 Contract assets recognized 671 Payments received ( 977 ) Write-off due to contract modification ( 50 ) Contract assets as of June 30, 2024 $ 626 Contract assets as of December 31, 2022 $ 332 Contract assets recognized 889 Payments received ( 250 ) Write-off due to contract modification ( 146 ) Contract assets as of June 30, 2023 $ 825 Deferred Revenue and Contract Liabilities – The Company’s deferred revenue and contract liabilities represent services and products sold to customers for which the performance obligation has not been completed by the Company. The Company classifies deferred revenue and contract liabilities as current or noncurrent based on the timing of when it expects to recognize revenue. The noncurrent portion of deferred revenue and contract liabilities is included in other long-term liabilities in the Company’s condensed balance sheets. The following table provides information about deferred revenue and contract liabilities from contracts with customers: Amount Deferred revenue and contract liabilities as of December 31, 2023 $ 1,919 Billings not yet recognized as revenue 956 Beginning deferred revenue and contract liabilities recognized as revenue ( 987 ) Impairment 1 ( 214 ) Deferred revenue and contract liabilities as of June 30, 2024 $ 1,674 Deferred revenue and contract liabilities as of December 31, 2022 $ 935 Billings not yet recognized as revenue 1,324 Beginning deferred revenue and contract liabilities recognized as revenue ( 626 ) Deferred revenue and contract liabilities as of June 30, 2023 $ 1,633 1. The Company wrote off certain contract liabilities associated with intangible assets that were determined to be impaired during the three months ended June 30, 2024. Refer to Note 7, Intangible Assets . Transaction Price Allocated to Future Performance Obligations At June 30, 2024 , the revenue expected to be recognized in future periods related to performance obligations that are unsatisfied for executed contracts with an original duration of one year or more was approximately $ 30,805 . The Company expects to satisfy its remaining performance obligations by December 31, 2029, with $ 4,415 to be satisfied by December 31, 2024 , $ 8,451 to be satisfied by December 31, 2025 , $ 6,366 to be satisfied by December 31, 2026 , $ 5,497 to be satisfied by December 31, 2027 , $ 3,949 to be satisfied by December 31, 2028 , $ 2,127 to be satisfied by December 31, 2029 . The Company does not disclose the value of unsatisfied performance obligations for (i) contracts with original expected lengths of one year or less or (ii) contracts for which the Company recognizes revenue at the amount to which it has the right to invoice for the products delivered or services performed. |