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Stockholders' Equity (Series C) (Details) $ / shares in Units, $ in Thousands |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Mar. 02, 2020 USD ($) | Feb. 28, 2020 $ / shares shares | Mar. 31, 2020 director quarter | Dec. 31, 2021 USD ($) quarter $ / shares shares | Dec. 31, 2020 USD ($) $ / shares shares | Dec. 31, 2019 USD ($) $ / shares
Class of Stock [Line Items] |  |  |  |  |  |
Proceeds from issuance of series C preferred stock | $ |  |  |  | $ 0 | $ 275,000 | $ 0
Maximum quarters without dividends to get voting rights, in quarters | quarter |  |  |  | 6 |  |
Series C Preferred Stock |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Preferred stock, dividend rate |  |  |  | 6.50% | 6.50% |
Preferred stock, shares issued (in shares) | shares |  |  |  | 11,000,000 | 11,000,000 |
Preferred stock, par value (in dollars per share) |  |  |  | $ 0.01 | $ 0.01 |
Minimum percentage of preferred shareholders required for approval |  |  |  | 66.67% |  |
Preferred stock, per share amounts of preferred dividends in arrears |  |  |  | $ 0.53264 |  |
Series C Preferred Stock | Preferred Stock |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Preferred stock, dividend rate |  | 6.50% |  | 6.50% | 6.50% | 6.50%
Shares reclassified to redeemable capital stock (in shares) | shares |  | 12,650,000 |  |  |  |
Preferred stock, shares issued (in shares) | shares |  | 11,000,000 |  |  |  |
Preferred stock, par value (in dollars per share) |  | $ 0.01 |  |  |  |
Preferred stock, liquidation preference (in dollars per share) |  | $ 25.00 |  | $ 25.00 | $ 25.00 | $ 25.00
Proceeds from issuance of series C preferred stock | $ | $ 266,000 |  |  |  |  |
Debt instrument, basis spread on variable rate |  | 5.345% |  |  |  |
Preferred stock, redemption price (in dollars per share) |  | $ 25.00 |  |  |  |
Maximum quarters without dividends to get voting rights, in quarters | quarter |  |  | 6 |  |  |
Number of additional directors that can be elected by preferred stock holders | director |  |  | 2 |  |  |

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- Definition Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. + 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 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644 + Details
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