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10. INTANGIBLE ASSETS (Tables) | 12 Months Ended
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Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Estimated Future Amortization Expense Related to Intangible Assets | The following table outlines our estimated future amortization expense related to intangible assets held at December 31, 2021 (in thousands): Estimated Future Amortization Expense Related to Intangible Assets
Years Ended December 31, |  |  | Amount
2022 |  | $ | 40
2023 |  |  | 32
2024 |  |  | 22
2025 |  |  | 14
2026 |  |  | 7
Thereafter |  |  | -
Total |  | $ | 115

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