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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Other Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |
Other assets | $ 9,220 | $ 11,977 |
Deposits for building leases | 1,900 | 2,200 |
Deposit assets | 2,400 | 2,600 |
Indefinite lived intangible assets | 200 |  | $ 200
Operating Lease, Right-of-Use Asset | 4,700 | 6,900 |
Prepaid Inventory | $ 1,300 | $ 800 |

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