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Investment Securities Available for Sale, at Fair Value - Proceeds from Sale (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Debt Securities, Available-for-sale [Line Items] |  |
Sales Proceeds | $ 24,374 | $ 111,628
Realized Gains | 374 | 5,208
Realized Losses | 0 | (833)
Net Realized Gains (Losses) | 374 | 4,375
Non-Agency RMBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Sales Proceeds | 24,374 | 72,083
Realized Gains | 374 | 12
Realized Losses | 0 | (833)
Net Realized Gains (Losses) | $ 374 | (821)
CMBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Sales Proceeds |  | 39,545
Realized Gains |  | 5,196
Realized Losses |  | 0
Net Realized Gains (Losses) |  | $ 5,196

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- Definition Proceeds Including Receivable For Unsettled Trades From Sale of Debt Securities, Available-for-sale + References No definition available. + Details
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- Definition Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27357-111563 + Details
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- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27357-111563 + Details
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- Definition Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27357-111563 + Details
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