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11. Retirement Savings Plan and Executive Severance Policy (Details Narrative) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Retirement Benefits [Abstract] |  |
Plan expenses | $ 304 | $ 420

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- References No definition available. + Details
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- Definition Amount of administration expense of defined benefit plan which decreases plan assets. Excludes plan administration expense paid by employer. + References No definition available. + Details
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