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Unsolicited Bid and Shareholder Demand (Details) - USD ($) |  |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Apr. 23, 2020 | Apr. 16, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |
Legal and financial advisory expenses |  |  | $ 0 | $ (81,000) | $ 0 | $ 1,752,000
Settlement Agreement with Mr. Nynens and the N&W Group |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |
Shares repurchased | 261,631 | 261,631 |  |  |  |
Market value (in dollars per share) | $ 13.19 |  |  |  |  |
Shares repurchased (Percentage) | 5.80% |  |  |  |  |
Shares repurchased amount | $ 3,500,000 |  |  |  |  |

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