Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2020 |
Sep. 30, 2020 |
Jun. 30, 2020 |
Mar. 31, 2020 |
Dec. 31, 2019 |
Sep. 30, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Quarterly Financial Information Disclosure [Abstract] | |||||||||||
| Total interest income | $ 72,500 | $ 89,716 | $ 107,327 | $ 255,507 | $ 238,438 | $ 249,740 | $ 261,029 | $ 245,483 | $ 525,050 | $ 994,690 | $ 870,032 |
| Total interest expense | 22,641 | 29,185 | 62,114 | 167,308 | 167,284 | 191,077 | 192,443 | 163,525 | 281,248 | 714,329 | 519,671 |
| Net interest income | 49,859 | 60,531 | 45,213 | 88,199 | 71,154 | 58,663 | 68,586 | 81,958 | 243,802 | 280,361 | 350,361 |
| Total other-than-temporary impairment losses | 0 | 0 | 0 | 0 | (3,308) | (5,950) | (4,848) | (206) | 0 | (14,312) | (470) |
| Total other (loss) income | 207,508 | 44,325 | (42,658) | (1,920,741) | 116,477 | 297,310 | (107,494) | (70,176) | (1,711,566) | 236,117 | (103,026) |
| Total expenses | 42,380 | (88,856) | 194,283 | 50,252 | 51,941 | 47,879 | 44,394 | 47,550 | 198,059 | 191,764 | 249,332 |
| (Benefit from) provision for income taxes | 3,816 | (8,202) | (18,164) | (13,138) | (2,372) | (3,556) | 2,407 | (10,039) | (35,688) | (13,560) | 41,823 |
| Dividends on preferred stock | 18,951 | 18,950 | 18,951 | 18,950 | 18,950 | 18,951 | 18,950 | 18,950 | 75,802 | 75,801 | 65,395 |
| Net (loss) income attributable to common stockholders | $ 192,220 | $ 182,964 | $ (192,515) | $ (1,888,606) | $ 115,804 | $ 286,749 | $ (109,507) | $ (44,885) | $ (1,705,937) | $ 248,161 | $ (109,685) |
| Basic (loss) earnings per weighted average common share | $ 0.70 | $ 0.67 | $ (0.70) | $ (6.91) | $ 0.42 | $ 1.05 | $ (0.40) | $ (0.18) | $ (6.24) | $ 0.93 | $ (0.53) |
| Diluted (loss) earnings per weighted average common share | $ 0.68 | $ 0.64 | $ (0.70) | $ (6.91) | $ 0.41 | $ 1.00 | $ (0.40) | $ (0.18) | $ (6.24) | $ 0.93 | $ (0.53) |
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- Definition Total costs of sales and operating expenses for the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of the cost of borrowed funds accounted for as interest expense. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The net amount of operating interest income (expense). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of other-than-temporary impairment (OTTI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), recognized in earnings. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of preferred stock dividends that is an adjustment to net income apportioned to common stockholders. No definition available.
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- References No definition available.
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