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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands | Total | Series B Preferred Stock | Series C Preferred Stock | Preferred Stock Series B Preferred Stock | Preferred Stock Series C Preferred Stock | Common Stock | Additional Paid-in Capital | Additional Paid-in Capital Series C Preferred Stock | Accumulated Deficit | Accumulated Deficit Series B Preferred Stock | Accumulated Deficit Series C Preferred Stock | Accumulated Other Comprehensive Income | Revision of Prior Period, Accounting Standards Update, Adjustment | Revision of Prior Period, Accounting Standards Update, Adjustment Accumulated Deficit
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance (in shares) at Dec. 31, 2018 |  |  |  |  |  | 8,000 |  | 112,447 |  |  |  |  |  |  |  |  |
Beginning balance at Dec. 31, 2018 |  | $ 3,416,101 |  |  |  | $ 80 |  | $ 1,124 | $ 3,626,649 |  |  | $ (632,040) |  |  | $ 420,288 |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative effect adjustment on adoption of new accounting standard ASU 2016-13 |  | Accounting Standards Update 2016-13 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income/(loss) |  | $ 378,117 |  |  |  |  |  |  |  |  |  | 378,117 |  |  |  |  |
Issuance of stock, net of expenses (in shares) |  |  |  |  |  |  |  | 786 |  |  |  |  |  |  |  |  |
Issuance of stock, net of expenses |  | 12,325 |  |  |  |  |  | $ 7 | 12,318 |  |  |  |  |  |  |  |
Repurchase of shares of common stock (in shares) | [1] |  |  |  |  |  |  | (141) |  |  |  |  |  |  |  |  |
Repurchase of shares of common stock | [1] | (4,118) |  |  |  |  |  |  | (4,118) |  |  |  |  |  |  |  |
Equity based compensation expense |  | 9,230 |  |  |  |  |  |  | 9,230 |  |  |  |  |  |  |  |
Change in accrued dividends attributable to stock-based awards |  | (345) |  |  |  |  |  |  | (345) |  |  |  |  |  |  |  |
Dividends declared on common stock |  | (361,033) |  |  |  |  |  |  |  |  |  | (361,033) |  |  |  |  |
Dividends declared on preferred stock |  | (15,000) |  |  |  |  |  |  |  |  |  | (15,000) |  |  |  |  |
Dividends attributable to dividend equivalents |  | (1,084) |  |  |  |  |  |  |  |  |  | (1,084) |  |  |  |  |
Change in unrealized losses on securities, net |  | (24,445) |  |  |  |  |  |  |  |  |  |  |  |  | (24,445) |  |
Derivative hedging instruments fair value changes and amortization, net |  | (25,796) |  |  |  |  |  |  |  |  |  |  |  |  | (25,796) |  |
Changes in fair value of financing agreements at fair value due to changes in instrument-specific credit risk |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance (in shares) at Dec. 31, 2019 |  |  |  |  |  | 8,000 | 0 | 113,092 |  |  |  |  |  |  |  |  |
Ending balance at Dec. 31, 2019 |  | 3,383,952 |  |  |  | $ 80 | $ 0 | $ 1,131 | 3,643,734 |  |  | (631,040) |  |  | 370,047 | $ (8,326) | $ (8,326)
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income/(loss) |  | (679,390) |  |  |  |  |  |  |  |  |  | (679,390) |  |  |  |  |
Issuance of stock, net of expenses (in shares) |  |  |  |  |  |  | 11,000 | 3,448 |  |  |  |  |  |  |  |  |
Issuance of stock, net of expenses |  | 7,453 |  |  | $ 266,052 |  | $ 110 | $ 34 | 7,419 |  | $ 265,942 |  |  |  |  |  |
Repurchase of shares of common stock (in shares) | [1] |  |  |  |  |  |  | (3,611) |  |  |  |  |  |  |  |  |
Repurchase of shares of common stock |  | (53,577) | [1] |  |  |  |  | $ (36) | (53,541) | [1] |  |  |  |  |  |  |
Equity based compensation expense |  | 6,715 |  |  |  |  |  |  | 6,715 |  |  |  |  |  |  |  |
Change in accrued dividends attributable to stock-based awards |  | 856 |  |  |  |  |  |  | 856 |  |  |  |  |  |  |  |
Dividends declared on common stock |  | (56,546) |  |  |  |  |  |  |  |  |  | (56,546) |  |  |  |  |
Dividends declared on preferred stock |  | (29,796) |  | $ (15,000) | (14,796) |  |  |  |  |  |  |  | $ (15,000) | $ (14,796) |  |  |
Dividends attributable to dividend equivalents |  | (229) |  |  |  |  |  |  |  |  |  | (229) |  |  |  |  |
Change in unrealized losses on securities, net |  | (313,115) |  |  |  |  |  |  |  |  |  |  |  |  | (313,115) |  |
Derivative hedging instruments fair value changes and amortization, net |  | 22,675 |  |  |  |  |  |  |  |  |  |  |  |  | 22,675 |  |
Warrants issued and repurchased, net |  | 19,608 |  |  |  |  |  |  | 19,608 |  |  |  |  |  |  |  |
Changes in fair value of financing agreements at fair value due to changes in instrument-specific credit risk |  | (2,314) |  |  |  |  |  |  |  |  |  |  |  |  | (2,314) |  |
Balance (in shares) at Dec. 31, 2020 |  |  |  |  |  | 8,000 | 11,000 | 112,929 |  |  |  |  |  |  |  |  |
Ending balance at Dec. 31, 2020 |  | 2,524,802 |  |  |  | $ 80 | $ 110 | $ 1,129 | 3,851,517 |  |  | (1,405,327) |  |  | 77,293 |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income/(loss) |  | 328,870 |  |  |  |  |  |  |  |  |  | 328,870 |  |  |  |  |
Issuance of stock, net of expenses (in shares) |  |  |  |  |  |  |  | 288 |  |  |  |  |  |  |  |  |
Issuance of stock, net of expenses |  | 1,832 |  |  |  |  |  | $ 3 | 1,829 |  |  |  |  |  |  |  |
Repurchase of shares of common stock (in shares) | [1] |  |  |  |  |  |  | (5,079) |  |  |  |  |  |  |  |  |
Repurchase of shares of common stock | [1] | (86,393) |  |  |  |  |  | $ (50) | (86,343) |  |  |  |  |  |  |  |
Equity based compensation expense |  | 9,038 |  |  |  |  |  |  | 9,038 |  |  |  |  |  |  |  |
Change in accrued dividends attributable to stock-based awards |  | (837) |  |  |  |  |  |  | (559) |  |  | (278) |  |  |  |  |
Dividends declared on common stock |  | (169,275) |  |  |  |  |  |  |  |  |  | (169,275) |  |  |  |  |
Dividends declared on preferred stock |  | (32,875) |  | $ (15,000) | $ (17,875) |  |  |  |  |  |  |  | $ (15,000) | $ (17,875) |  |  |
Dividends attributable to dividend equivalents |  | (599) |  |  |  |  |  |  |  |  |  | (599) |  |  |  |  |
Change in unrealized losses on securities, net |  | (32,774) |  |  |  |  |  |  |  |  |  |  |  |  | (32,774) |  |
Changes in fair value of financing agreements at fair value due to changes in instrument-specific credit risk |  | 1,059 |  |  |  |  |  |  |  |  |  |  |  |  | 1,059 |  |
Balance (in shares) at Dec. 31, 2021 |  |  |  |  |  | 8,000 | 11,000 | 108,138 |  |  |  |  |  |  |  |  |
Ending balance at Dec. 31, 2021 |  | $ 2,542,848 |  |  |  | $ 80 | $ 110 | $ 1,082 | $ 3,775,482 |  |  | $ (1,279,484) |  |  | $ 45,578 |  |
[1] | For the year ended December 31, 2021, includes approximately $799,000 (53,281 shares) surrendered for tax purposes related to equity-based compensation awards. For the year ended December 31, 2020, includes approximately $2.7 million (90,134 shares) surrendered for tax purposes related to equity-based compensation awards. For the year ended December 31, 2019, includes approximately $4.1 million (140,704 shares) surrendered for tax purposes related to equity-based compensation awards.

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