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SEGMENTS - Schedule of Activities with Major Customers (Details) - Customer Concentration Risk - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Boeing | Consolidated Revenue |  |  |
Revenue, Major Customer |  |  |
Percent of consolidated revenue | 10.00% | 9.50% | 13.60%
Boeing | Accounts Receivable |  |  |
Revenue, Major Customer |  |  |
Accounts receivable | $ 14,545 | $ 6,490 |
Panasonic | Consolidated Revenue |  |  |
Revenue, Major Customer |  |  |
Percent of consolidated revenue |  | 11.10% | 13.00%
Panasonic | Accounts Receivable |  |  |
Revenue, Major Customer |  |  |
Accounts receivable |  | $ 4,083 |

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