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General (Narrative) (Details) - Paycheck Protection Program Loan [Member] - USD ($) $ in Thousands | Nov. 03, 2020 | May 30, 2020
--- | --- | ---
Line of Credit Facility [Line Items] |  |
Principal loan amount |  | $ 6,900
Yankee Equipment Systems, Inc [Member] |  |
Line of Credit Facility [Line Items] |  |
Loan obligation | $ 916 |

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