Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2020	Dec. 31, 2019
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	833,333	833,333
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	41,666,666	41,666,666
Common stock, shares issued	36,480,038	33,637,501
Common stock, shares outstanding	36,480,038	33,637,501
Series B Junior Participating Preferred Stock [Member]
Preferred stock, shares authorized	50,000	50,000
Preferred stock, shares issued
Preferred stock, shares outstanding

Face amount or stated value per share of common stock.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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