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Revenue from contracts with customers (Tables) | 6 Months Ended
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Jun. 30, 2022
Revenue from Contract with Customer [Abstract] |
Disaggregation of revenue | The following table depicts the disaggregation of revenue by type of products or services and timing of transfer of products or services (in thousands):
| Three months ended June 30,
| 2022 |  | 2021
Type of products or services |  |  |
QCaaS | $ | 1,176 |  |  | $ | 961 |
Professional services | 156 |  |  | 158 |
Other revenue | 39 |  |  | 18 |
Total revenue, net | $ | 1,371 |  |  | $ | 1,137 |
Timing of revenue recognition |  |  |
Revenue recognized over the time | $ | 1,296 |  |  | $ | 1,099 |
Revenue recognized at a point in time | 75 |  |  | 38 |
Total revenue, net | $ | 1,371 |  |  | $ | 1,137 |
| Six months ended June 30,
| 2022 |  | 2021
Type of products or services |  |  |
QCaaS | $ | 2,560 |  |  | $ | 2,083 |
Professional services | 464 |  |  | 429 |
Other revenue | 59 |  |  | 34 |
Total revenue, net | $ | 3,083 |  |  | $ | 2,546 |
Timing of revenue recognition |  |  |
Revenue recognized over the time | $ | 2,957 |  |  | $ | 2,484 |
Revenue recognized at a point in time | 126 |  |  | 62 |
Total revenue, net | $ | 3,083 |  |  | $ | 2,546 |
The following table presents a summary of revenue by geography for the three and six month periods ended June 30, 2022 and 2021:
| Three months ended June 30,
| 2022 |  | 2021
United States | $ | 655 |  |  | $ | 622 |
Japan | 282 |  |  | 354 |
Germany | 257 |  |  | 65 |
Other | 177 |  |  | 96 |
Total revenue | $ | 1,371 |  |  | $ | 1,137 |
| Six months ended June 30,
| 2022 |  | 2021
United States | $ | 1,439 |  |  | $ | 1,325 |
Japan | 709 |  |  | 921 |
Germany | 520 |  |  | 127 |
Other | 415 |  |  | 173 |
Total revenue | $ | 3,083 |  |  | $ | 2,546 |
Accounts receivable, contract assets and liabilities, and changes in deferred revenue | The following table provides information about account receivable, contract assets and liabilities as of June 30, 2022 and December 31, 2021 (in thousands):
| June 30, |  | December 31,
| 2022 |  | 2021
Contract assets: |  |  |
Trade account receivable | $ | 918 |  |  | $ | 421 |
Unbilled receivables, which are included in 'Prepaid expenses and other current assets' | 41 |  |  | 17 |
Total contract assets | 959 |  |  | 438 |
Contract liabilities: |  |  |
Deferred revenue, current | 2,595 |  |  | 2,665 |
Deferred revenue, noncurrent | 20 |  |  | 54 |
Customer deposit, which are included in 'Accrued expenses and other current liabilities' | 21 |  |  | 21 |
Total contract liabilities | $ | 2,636 |  |  | $ | 2,740 |
Changes in deferred revenue from contracts with customers were as follows (in thousands):
| June 30, |  | December 31,
| 2022 |  | 2021
Balance at beginning of period | $ | 2,719 |  |  | $ | 4,713 |
Deferral of revenue | 2,906 |  |  | 4,092 |
Recognition of deferred revenue | (3,010) |  |  | (6,086) |
Balance at end of period | $ | 2,615 |  |  | $ | 2,719 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045 + Details
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