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Stockholders' Equity - Schedule of Preferred Stock Issued and Outstanding (Details) - USD ($) | 6 Months Ended |
--- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020
Class of Stock [Line Items] |  |
Preferred stock, shares authorized (in shares) | 200,000,000 | 200,000,000
Preferred stock, shares issued (in shares) | 20,872,888 | 20,872,888
Preferred stock, carrying value | $ 504,765,000 | $ 504,765,000
Series B Preferred Stock |  |
Class of Stock [Line Items] |  |
Preferred stock, shares authorized (in shares) | 6,000,000 |
Preferred stock, shares issued (in shares) | 3,156,087 |
Preferred stock, carrying value | $ 76,180,000 |
Preferred stock, liquidation preference | $ 78,902,000 |
Preferred stock, contractual rate, percentage | 7.75% |
Series C Preferred Stock |  |
Class of Stock [Line Items] |  |
Preferred stock, shares authorized (in shares) | 6,600,000 |
Preferred stock, shares issued (in shares) | 4,181,807 |
Preferred stock, carrying value | $ 101,102,000 |
Preferred stock, liquidation preference | $ 104,545,000 |
Preferred stock, contractual rate, percentage | 7.875% |
Series D Preferred Stock |  |
Class of Stock [Line Items] |  |
Preferred stock, shares authorized (in shares) | 8,400,000 |
Preferred stock, shares issued (in shares) | 6,123,495 |
Preferred stock, carrying value | $ 148,134,000 |
Preferred stock, liquidation preference | $ 153,087,000 |
Preferred stock, contractual rate, percentage | 8.00% |
Series D Preferred Stock | LIBOR |  |
Class of Stock [Line Items] |  |
Preferred stock, floating annual rate, percentage | 0.00057% |
Series E Preferred Stock |  |
Class of Stock [Line Items] |  |
Preferred stock, shares authorized (in shares) | 9,900,000 |
Preferred stock, shares issued (in shares) | 7,411,499 |
Preferred stock, carrying value | $ 179,349,000 |
Preferred stock, liquidation preference | $ 185,288,000 |
Preferred stock, contractual rate, percentage | 7.875% |
Series E Preferred Stock | LIBOR |  |
Class of Stock [Line Items] |  |
Preferred stock, floating annual rate, percentage | 0.06429% |
Preferred Stock, Series Shares |  |
Class of Stock [Line Items] |  |
Preferred stock, shares authorized (in shares) | 30,900,000 | 30,900,000
Preferred stock, shares issued (in shares) | 20,872,888 | 20,872,888
Preferred stock, carrying value | $ 504,765,000 |
Preferred stock, liquidation preference | $ 521,822,000 | $ 521,822,000

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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 http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644 + Details
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- Definition Value of the difference between preference in liquidation and the par or stated values of the preferred shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(d)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (h) -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 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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