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Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Preferred stock, par value per share | $ 0 | $ 0 | $ 0
Preferred stock, shares authorized | 5,000,000 | 5,000,000 | 5,000,000
Preferred stock, shares issued | 0 | 0 | 0
Series A Preferred Stock [Member] |  |  |
Preferred stock, par value per share | $ 0 | $ 0 | $ 0
Preferred stock, shares authorized | 300,000 | 300,000 | 300,000

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