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Note E - Convertible Preferred Stock (Details Textual) $ / shares in Units, $ in Millions |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jan. 30, 2018 USD ($) $ / shares shares | Mar. 31, 2021 | Sep. 30, 2021 USD ($) $ / shares shares | Dec. 31, 2020 shares
Preferred Stock, Shares Authorized (in shares) | shares |  |  | 1,000,000 | 1,000,000
Temporary Equity, Liquidation Preference Per Share (in dollars per share) | $ / shares |  |  | $ 183.42 |
Series A Preferred Stock [Member] |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  | 5.00% | 5.00% |
Temporary Equity, Liquidation Preference |  |  | $ 1.8 |
Convertible Preferred Stock, Conversion Ratio |  | 100.91 |  |
Series A Preferred Stock [Member] | Wipro [Member] |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | shares | 9,926 |  |  |
Shares Issued, Price Per Share (in dollars per share) | $ / shares | $ 1,000 |  |  |
Stock Issued During Period, Value, New Issues | $ 9.9 |  |  |
Payments of Stock Issuance Costs | 0.2 |  |  |
Proceeds from Issuance of Preferred Stock and Preference Stock | $ 9.9 |  |  |

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- Definition The cash outflow for cost incurred directly with the issuance of an equity security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details
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- Definition The percentage rate used to calculate dividend payments on preferred stock. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The aggregate liquidation preference (or restrictions) of stock classified as temporary equity 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. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References No definition available. + Details
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