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4. REVENUE RECOGNITION (Tables) | 9 Months Ended
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Sep. 30, 2021
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue | The following table provides information about disaggregated revenue by timing of revenue recognition (in thousands): Disaggregation of Revenue
|  |  | Three Months Ended September 30, 2021
|  |  |  |  |  | License and |  |  |  |  |  |
|  |  | Product |  |  | royalty |  |  | Contract |  |  |
|  |  | revenue |  |  | revenue |  |  | revenue |  |  | Total
Timing of revenue recognition: |  |  |  |  |  |  |  |  |  |  |  |
Products transferred at a point in time |  | $ | - |  | $ | 718 |  | $ | - |  | $ | 718
Product and services transferred over time |  |  | - |  |  | - |  |  | - |  |  | -
Total |  | $ | - |  | $ | 718 |  | $ | - |  | $ | 718
|  |  | Nine Months ended September 30, 2021
|  |  |  |  |  | License and |  |  |  |  |  |
|  |  | Product |  |  | royalty |  |  | Contract |  |  |
|  |  | revenue |  |  | revenue |  |  | revenue |  |  | Total
Timing of revenue recognition: |  |  |  |  |  |  |  |  |  |  |  |
Products transferred at a point in time |  | $ | - |  | $ | 1,943 |  | $ | - |  | $ | 1,943
Product and services transferred over time |  |  | - |  |  | - |  |  | - |  |  | -
Total |  | $ | - |  | $ | 1,943 |  | $ | - |  | $ | 1,943
|  |  | Three Months Ended September 30, 2020
|  |  |  |  |  | License and |  |  |  |  |  |
|  |  | Product |  |  | royalty |  |  | Contract |  |  |
|  |  | revenue |  |  | revenue |  |  | revenue |  |  | Total
Timing of revenue recognition: |  |  |  |  |  |  |  |  |  |  |  |
Products transferred at a point in time |  | $ | 100 |  | $ | 539 |  | $ | - |  | $ | 639
Product and services transferred over time |  |  | - |  |  | - |  |  | - |  |  | -
Total |  | $ | 100 |  | $ | 539 |  | $ | - |  | $ | 639
|  |  | Nine Months ended September 30, 2020
|  |  |  |  |  | License and |  |  |  |  |  |
|  |  | Product |  |  | royalty |  |  | Contract |  |  |
|  |  | revenue |  |  | revenue |  |  | revenue |  |  | Total
Timing of revenue recognition: |  |  |  |  |  |  |  |  |  |  |  |
Products transferred at a point in time |  | $ | 1,347 |  | $ | 1,323 |  | $ | 4 |  | $ | 2,674
Product and services transferred over time |  |  | - |  |  | - |  |  | 21 |  |  | 21
Total |  | $ | 1,347 |  | $ | 1,323 |  | $ | 25 |  | $ | 2,695
Significant Changes in Contract Assets and Contract Liabilities | Significant changes in the contract assets and the contract liabilities balances during the period are as follows (in thousands, except percentages): Significant Changes in Contract Assets and Contract Liabilities
|  |  | September 30, |  |  | December 31, |  |  |  |  |
|  |  | 2021 |  |  | 2020 |  |  | $ Change |  | % Change
Contract assets |  | $ | - |  | $ | - |  | $ | - |  | -
Contract liabilities |  |  | (5,822) |  |  | (7,765) |  |  | 1,943 |  | (25.0)
Net contract assets (liabilities) |  | $ | (5,822) |  | $ | (7,765) |  | $ | 1,943 |  | (25.0)
In April 2017, we signed a contract with Microsoft Corporation to develop an LBS display system. Under the agreement, we received an upfront payment of $10.0 million. As of December 31, 2020, we had applied $2.2 million against the contract liability. During the three and nine months ended September 30, 2021, we applied $718,000 and $1.9 million, respectively, against the contract liability with this customer.
Estimated Timing of Revenue Recognition | The following table provides information about the estimated timing of revenue recognition (in thousands): Estimated Timing of Revenue Recognition
|  |  | Remainder of 2021 |  |  | 2022
License and royalty revenue |  | $ | 582 |  | $ | 2,500

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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 http://asc.fasb.org/extlink&oid=123351226&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 http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 + Details
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- Definition Tabular disclosure of expected timing for satisfying remaining performance obligation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130556-203045 + Details
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