Consolidated Balance Sheets (Unaudited) (Parentheticals) - $ / shares	Mar. 31, 2020	Dec. 31, 2019
Preferred stock, par value (in Dollars per share)	$ 0.001	$ 0.001
Preferred stock, authorized	1,000,000	1,000,000
Common stock, par value (in Dollars per share)	$ 0.001	$ 0.001
Common stock, authorized	100,000,000	100,000,000
Common stock, outstanding	31,531,958	31,513,018
Treasury stock	9,864,805	9,864,805

Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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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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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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