| Schedule of Repurchase Agreements [Table Text Block] |
The following table details the Company's outstanding borrowings under reverse repurchase agreements for Agency RMBS, Credit assets (which include non-Agency MBS, CLOs, consumer loans, corporate debt, residential mortgage loans, and commercial mortgage loans and REO), and U.S. Treasury securities, by remaining maturity as of June 30, 2018 and December 31, 2017: | | | | | | | | | | | | | | | | | | | | | | (In thousands) | | June 30, 2018 | | December 31, 2017 | | | | | Weighted Average | | | | Weighted Average | Remaining Maturity | | Outstanding Borrowings | | Interest Rate | | Remaining Days to Maturity | | Outstanding Borrowings | | Interest Rate | | Remaining Days to Maturity | Agency RMBS: | | | | | | | | | | | | | 30 Days or Less | | $ | 261,209 |
| | 2.01 | % | | 16 |
| | $ | 287,014 |
| | 1.43 | % | | 15 |
| 31-60 Days | | 395,408 |
| | 2.13 | % | | 45 |
| | 264,058 |
| | 1.47 | % | | 46 |
| 61-90 Days | | 233,892 |
| | 2.22 | % | | 77 |
| | 277,950 |
| | 1.63 | % | | 74 |
| 121-150 Days | | 573 |
| | 3.32 | % | | 125 |
| | — |
| | — | % | | — |
| 151-180 Days | | — |
| | — | % | | — |
| | 602 |
| | 2.56 | % | | 158 |
| Total Agency RMBS | | 891,082 |
| | 2.12 | % | | 45 |
| | 829,624 |
| | 1.51 | % | | 44 |
| Credit: | | | | | | | | | | | | | 30 Days or Less | | 25,011 |
| | 2.62 | % | | 3 |
| | 37,433 |
| | 2.61 | % | | 13 |
| 31-60 Days | | 155,309 |
| | 3.10 | % | | 48 |
| | 132,201 |
| | 2.44 | % | | 49 |
| 61-90 Days | | 144,983 |
| | 3.33 | % | | 76 |
| | 130,875 |
| | 2.75 | % | | 77 |
| 121-150 Days | | 1,711 |
| | 3.88 | % | | 146 |
| | 8,551 |
| | 3.79 | % | | 128 |
| 151-180 Days | | 12,241 |
| | 4.17 | % | | 167 |
| | 8,300 |
| | 3.40 | % | | 164 |
| 181-360 Days | | 121,971 |
| | 4.00 | % | | 221 |
| | 5,090 |
| | 3.59 | % | | 280 |
| > 360 Days | | 66,559 |
| | 5.59 | % | | 913 |
| | 56,944 |
| | 4.94 | % | | 1094 |
| Total Credit Assets | | 527,785 |
| | 3.69 | % | | 206 |
| | 379,394 |
| | 3.00 | % | | 219 |
| U.S. Treasury Securities: | | | | | | | | | | | | | 30 Days or Less | | 2,639 |
| | 2.30 | % | | 2 |
| | 297 |
| | 1.70 | % | | 2 |
| Total U.S. Treasury Securities | | 2,639 |
| | 2.30 | % | | 2 |
| | 297 |
| | 1.70 | % | | 2 |
| Total | | $ | 1,421,506 |
| | 2.70 | % | | 104 |
| | $ | 1,209,315 |
| | 1.98 | % | | 99 |
|
|
| Schedule of Maturities of Long-term Debt [Table Text Block] |
The following table details the Company's principal repayment schedule for outstanding borrowings as of June 30, 2018: | | | | | | | | | | | | | | | | | | Year | | Reverse Repurchase Agreements(1) | | Other Secured Borrowings(2) | | Senior Notes(1) | | Total | (In thousands) | | | | | | | | | 2018 | | $ | 1,232,976 |
| | $ | 20,305 |
| | $ | — |
| | $ | 1,253,281 |
| 2019 | | 121,971 |
| | 113,777 |
| | — |
| | 235,748 |
| 2020 | | 66,559 |
| | 52,859 |
| | — |
| | 119,418 |
| 2021 | | — |
| | 10,990 |
| | — |
| | 10,990 |
| 2022 | | — |
| | — |
| | 86,000 |
| | 86,000 |
| Total | | $ | 1,421,506 |
| | $ | 197,931 |
| | $ | 86,000 |
| | $ | 1,705,437 |
|
| | (1) | Reflects the Company's contractual principal repayment dates. |
| | (2) | Reflects the Company's expected principal repayment dates. |
|