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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