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Stockholders' Equity - Schedule of Preferred Stock Issued and Outstanding (Details) - USD ($) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2022 | Dec. 31, 2021
Class of Stock [Line Items] |  |
Preferred stock, carrying value | $ 538,221,000 | $ 538,221,000
Series D Preferred Stock |  |
Class of Stock [Line Items] |  |
Preferred stock, shares authorized (in shares) | 8,400,000 | 8,400,000
Preferred stock, shares issued (in shares) | 6,123,495 | 6,123,495
Preferred stock, shares outstanding (in shares) | 6,123,495 | 6,123,495
Preferred stock, carrying value | $ 148,134,000 | $ 148,134,000
Preferred stock, liquidation preference | $ 153,087,000 | $ 153,087,000
Preferred stock, contractual rate, percentage | 8.00% | 8.00%
Series D Preferred Stock | LIBOR |  |
Class of Stock [Line Items] |  |
Preferred stock, floating annual rate, percentage | 5.695% | 5.695%
Series E Preferred Stock |  |
Class of Stock [Line Items] |  |
Preferred stock, shares authorized (in shares) | 9,900,000 | 9,900,000
Preferred stock, shares issued (in shares) | 7,411,499 | 7,411,499
Preferred stock, shares outstanding (in shares) | 7,411,499 | 7,411,499
Preferred stock, carrying value | $ 179,349,000 | $ 179,349,000
Preferred stock, liquidation preference | $ 185,288,000 | $ 185,288,000
Preferred stock, contractual rate, percentage | 7.875% | 7.875%
Series E Preferred Stock | LIBOR |  |
Class of Stock [Line Items] |  |
Preferred stock, floating annual rate, percentage | 6.429% | 6.429%
Series F Preferred Stock |  |
Class of Stock [Line Items] |  |
Preferred stock, shares authorized (in shares) | 7,750,000 | 7,750,000
Preferred stock, shares issued (in shares) | 5,750,000 | 5,750,000
Preferred stock, shares outstanding (in shares) | 5,750,000 | 5,750,000
Preferred stock, carrying value | $ 138,650,000 | $ 138,650,000
Preferred stock, liquidation preference | $ 143,750,000 | $ 143,750,000
Preferred stock, contractual rate, percentage | 6.875% | 6.875%
Series F Preferred Stock | Underwritten Public Offering |  |
Class of Stock [Line Items] |  |
Preferred stock, liquidation preference per share (in dollars per share) | $ 25 |
Series F Preferred Stock | LIBOR |  |
Class of Stock [Line Items] |  |
Preferred stock, floating annual rate, percentage | 6.13% | 6.13%
Series G Preferred Stock |  |
Class of Stock [Line Items] |  |
Preferred stock, shares authorized (in shares) | 5,450,000 | 3,450,000
Preferred stock, shares issued (in shares) | 3,000,000 | 3,000,000
Preferred stock, shares outstanding (in shares) | 3,000,000 | 3,000,000
Preferred stock, carrying value | $ 72,088,000 | $ 72,088,000
Preferred stock, liquidation preference | $ 75,000,000 | $ 75,000,000
Preferred stock, contractual rate, percentage | 7.00% |
Preferred Stock, Series Shares |  |
Class of Stock [Line Items] |  |
Preferred stock, shares authorized (in shares) | 31,500,000 | 29,500,000
Preferred stock, shares issued (in shares) | 22,284,994 | 22,284,994
Preferred stock, shares outstanding (in shares) | 22,284,994 | 22,284,994
Preferred stock, carrying value | $ 538,221,000 | $ 538,221,000
Preferred stock, liquidation preference | $ 557,125,000 | $ 557,125,000

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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 https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(d)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644 Reference 3: 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 https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (h) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21484-112644 + Details
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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 https://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 https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 + Details
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- Definition Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased. + 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 https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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