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Description of Business and Principles of Consolidation - Public offering (Details) - Common Stock [Member] $ / shares in Units, $ in Millions | Oct. 06, 2020 USD ($) $ / shares shares
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Number shares issuance public offering | 5,462,500
Public offering price per share | $ / shares | $ 1.75
Number of shares exercise of the underwriters option to purchase | 712,500
Proceeds from issuance public offering | $ | $ 8.7

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- Details
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