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4. LONG-TERM CONTRACTS (Details Narrative) - USD ($) $ in Thousands | 12 Months Ended | 36 Months Ended | 60 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2019 | Dec. 31, 2021 | Dec. 31, 2020
Deferred Revenue, Description |  | In May 2018, we signed a five-year license agreement with Sharp Corporation granting them exclusive license to our laser beam scanning (LBS) technology for display-only applications. The agreement includes an initial exclusivity period with requirements that must be met in order to maintain exclusivity. Because of the impact of COVID-19 on global commerce and new product introductions of consumer electronic devices, in February 2021 the agreement was amended to increase the term to six years and add twelve months to the initial exclusivity period. If this licensee acquires a customer, the agreement requires the licensee to buy specific components from us. The exclusivity period ended in the fourth quarter of 2021. |  |  |  |
Contract with Customer, Liability |  |  |  |  | $ 5,265 | $ 7,765
Software License Arrangement [Member] |  |  |  |  |  |
Deferred Revenue, Description | Beginning in the fourth quarter of 2019, the $10.0 million upfront payment was being recognized as revenue at the point in time that component sales were sold to the major technology customer. In March 2020, we entered into an agreement for our customer to take over production of the components we had been producing for them. The agreement provides that, beginning in March 2020, we will earn a royalty on each component shipped that is approximately equal to the gross profit we would have earned if we continued to produce and ship the components. Under the arrangement, the royalties earned will be applied against the remaining $5.3 million prepayment that we had previously received from the customer until the prepayment is exhausted. |  | In April 2017, we signed a contract with a major technology company to develop an LBS display system. Under the agreement, we received an upfront payment of $10.0 million in 2017 and, as of December 31, 2019, had also received $15.0 million, net of early payment discounts, representing all payment due for development work. The original contract was for $14.0 million in fees for development work, but we and our customer agreed to add $1.1 million in additional work to total $15.1 million. After applying early payment discounts, we recognized revenue of $15.0 million in development fees over time based on the proportion of total cost expended (under Topic 606, the "input method") to the total cost expected to complete the contract performance obligation. For the year ended December 31, 2019, we recognized $2.9 million of contract revenue from development fees on this agreement. |  |  |
Deferred Revenue, Additions |  |  | $ 10,000 | $ 15,000 |  |
Recognition of Deferred Revenue | $ 2,900 |  |  |  | 15,000 |
Contract with Customer, Liability |  |  |  |  | $ 5,300 |

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