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Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2019	Dec. 31, 2018
Common stock, shares authorized	15,000,000	15,000,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares issued	8,800,577	8,800,313
Common stock, shares outstanding	8,800,577	8,800,313
Series B Preferred Stock
Preferred stock, shares authorized	54,425	54,425
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares issued	80	82
Preferred stock, shares outstanding	80	82
Preferred stock, liquidation preference	$ 0.001	$ 0.001

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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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The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share.

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