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Capital Stock (Tables) | 3 Months Ended
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Mar. 31, 2022
Capital Stock |
Schedule of declared and paid cash dividends | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Series A Preferred Stock | ​ | Series B Depositary Share | ​ | ​
​ | ​ | Cash Dividend Declared | ​ | Cash Dividend Declared | ​ | ​
Dividend Declaration Date |  | ($ per share) |  | ($ per share) |  | Dividend Payment Date
October 20, 2021 | ​ | $ | 0.53906 | ​ | $ | 0.52344 | ​ | January 18, 2022
March 17, 2022 | ​ | $ | 0.53906 | ​ | $ | 0.52344 | ​ | April 15, 2022
Summary of Common Stock Warrants Outstanding | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ |  | Exercise Price |  | March 31, |  | December 31,
Issuance Date | ​ | Expiration Date | ​ | Balance Sheet Classification | ​ | per Share | ​ | 2022 | ​ | 2021
May 2018 |  | May 2028 |  | Stockholders’ equity | ​ | $ | 23.69 |  | 6,332 |  | 6,332
March 2019 | ​ | March 2029 | ​ | Stockholders’ equity | ​ | $ | 14.71 | ​ | 4,845 | ​ | 4,845
​ |  |  |  |  | ​ |  |  |  | 11,177 |  | 11,177

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- Definition Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6784392&loc=d3e188667-122775 + Details
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