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Intangible Assets- Schedule of Goodwill (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2014 | Dec. 31, 2012
--- | --- | --- | --- | ---
Finite Lived Intangible Assets [Line Items] |  |  |  |
Goodwill | $ 7,446 | $ 5,585 |  |
HGP [Member] |  |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |  |
Goodwill | 2,040 | 2,040 |  | $ 2,000
NLEX [Member] |  |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |  |
Goodwill | 3,545 | 3,545 | $ 3,500 |
ALT [Member] |  |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |  |
Goodwill | $ 1,861 | $ 0 |  |

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