Valuation (Fair Value of Other Financial Instruments) (Details) - USD ($) $ in Thousands |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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|---|---|---|---|---|---|---|---|
| Assets: | |||||||
| Cash and cash equivalents | $ 111,647 | [1] | $ 72,302 | [1] | $ 44,656 | ||
| Restricted cash | 425 | ||||||
| Due from brokers | 63,147 | [1] | 79,829 | [1] | 71,794 | ||
| Repurchase agreements, at fair value | 38,640 | 73,639 | 61,274 | ||||
| Liabilities: | |||||||
| Repurchase agreements | 1,496,931 | [1] | 2,445,300 | [1] | 1,498,849 | ||
| Other secured borrowings | 51,062 | [1] | 150,334 | [1] | 114,100 | ||
| Senior notes, net | 85,561 | 85,298 | 85,035 | ||||
| Due to brokers | 5,059 | 2,197 | $ 5,553 | ||||
| Fair Value | |||||||
| Assets: | |||||||
| Cash and cash equivalents | 111,647 | 72,302 | |||||
| Restricted cash | 175 | 175 | |||||
| Due from brokers | 63,147 | 79,829 | |||||
| Repurchase agreements, at fair value | 38,640 | 73,639 | |||||
| Liabilities: | |||||||
| Repurchase agreements | 1,496,931 | 2,445,300 | |||||
| Other secured borrowings | 51,062 | 150,334 | |||||
| Senior notes, net | 86,000 | 88,365 | |||||
| Due to brokers | 5,059 | 2,197 | |||||
| Carrying Value | |||||||
| Assets: | |||||||
| Cash and cash equivalents | 111,647 | 72,302 | |||||
| Restricted cash | 175 | 175 | |||||
| Due from brokers | 63,147 | 79,829 | |||||
| Repurchase agreements, at fair value | 38,640 | 73,639 | |||||
| Liabilities: | |||||||
| Repurchase agreements | 1,496,931 | 2,445,300 | |||||
| Other secured borrowings | 51,062 | 150,334 | |||||
| Senior notes, net | 85,561 | 85,298 | |||||
| Due to brokers | $ 5,059 | $ 2,197 | |||||
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