Valuation (Schedule of Financial Instruments) (Details) - USD ($) $ in Thousands		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)	[1],[2]	$ 1,514,185		$ 2,449,941
Investment in unconsolidated entities, at fair value	[1]	141,620		71,850
Financial derivatives–assets, at fair value-		15,479		16,788		$ 20,001
Repurchase agreements, at fair value		38,640		73,639		61,274
Investments sold short, at fair value-		(38,642)		(73,409)		(850,577)
Financial derivatives–liabilities, at fair value-		(24,553)		(27,621)		(20,806)
Other secured borrowings, at fair value		(754,921)	[1]	(594,396)	[1]	(297,948)
Level 3 | Non-Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		127,838		89,581
Level 3 | CMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		63,148		29,805
Level 3 | CLOs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		111,100		44,979
Level 3 | Asset-backed securities, backed by consumer loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		44,925		48,610
Level 3 | Corporate loan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets				18,510
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in unconsolidated entities, at fair value		141,620		71,850
Total assets		3,124,764		3,951,005		3,020,586
Other secured borrowings, at fair value		(754,921)		(594,396)
Total liabilities		(818,116)		(695,426)		(1,169,331)
Fair Value, Measurements, Recurring | Investments Sold Short
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-						(850,577)
Fair Value, Measurements, Recurring | Investments Sold Short | Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-						(772,964)
Fair Value, Measurements, Recurring | Investments Sold Short | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-		(218)		(471)
Fair Value, Measurements, Recurring | Investments Sold Short | Government debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-		(38,424)		(72,938)		(54,151)
Fair Value, Measurements, Recurring | Investments Sold Short | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-						(6,529)
Fair Value, Measurements, Recurring | Investments Sold Short | Common stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-						(16,933)
Fair Value, Measurements, Recurring | Financial Derivatives - Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-						(20,806)
Fair Value, Measurements, Recurring | Financial Derivatives - Liabilities | Credit default swaps on corporate bond indices
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		(6,438)		(14,524)		(11,557)
Fair Value, Measurements, Recurring | Financial Derivatives - Liabilities | Credit default swaps on corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		(747)		(1,693)		(3,246)
Fair Value, Measurements, Recurring | Financial Derivatives - Liabilities | Credit default swaps on asset-backed indices
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		(130)		(250)		(2,125)
Fair Value, Measurements, Recurring | Financial Derivatives - Liabilities | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		(15,174)		(8,719)		(3,397)
Fair Value, Measurements, Recurring | Financial Derivatives - Liabilities | TBA securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		(925)		(1,012)
Fair Value, Measurements, Recurring | Financial Derivatives - Liabilities | Futures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		(376)		(45)		(355)
Fair Value, Measurements, Recurring | Financial Derivatives - Liabilities | Forwards
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		(279)		(169)		(120)
Fair Value, Measurements, Recurring | Financial Derivatives - Liabilities | Total return swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		(484)		(1,209)		(6)
Fair Value, Measurements, Recurring | Other secured borrowings, at fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other secured borrowings, at fair value						(297,948)
Fair Value, Measurements, Recurring | Cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents						12,460
Fair Value, Measurements, Recurring | Securities | Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		959,443		1,936,963
Fair Value, Measurements, Recurring | Securities | Non-Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		204,114		166,550
Fair Value, Measurements, Recurring | Securities | CMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		117,653		124,868
Fair Value, Measurements, Recurring | Securities | CLOs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		181,271		170,443
Fair Value, Measurements, Recurring | Securities | Asset-backed securities, backed by consumer loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		44,925		48,610
Fair Value, Measurements, Recurring | Securities | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		5,189		1,113
Fair Value, Measurements, Recurring | Securities | Corporate equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		1,590		1,394
Fair Value, Measurements, Recurring | Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						2,939,311
Fair Value, Measurements, Recurring | Investments | Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						1,450,217
Fair Value, Measurements, Recurring | Investments | Non-Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						302,639
Fair Value, Measurements, Recurring | Investments | CMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						33,908
Fair Value, Measurements, Recurring | Investments | CLOs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						123,893
Fair Value, Measurements, Recurring | Investments | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						22,392
Fair Value, Measurements, Recurring | Investments | Corporate equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						43,793
Fair Value, Measurements, Recurring | Investments | Secured notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						10,917
Fair Value, Measurements, Recurring | Investments | U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						76
Fair Value, Measurements, Recurring | Investments | Residential mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						496,830
Fair Value, Measurements, Recurring | Investments | Commercial mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						211,185
Fair Value, Measurements, Recurring | Investments | Consumer loans and asset-backed securities backed by consumer loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						206,761
Fair Value, Measurements, Recurring | Investments | Real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						34,500
Fair Value, Measurements, Recurring | Investments | Common stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						2,200
Fair Value, Measurements, Recurring | Loans | Residential mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, at fair value		1,187,069		932,203
Fair Value, Measurements, Recurring | Loans | Commercial mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, at fair value		213,031		274,759
Fair Value, Measurements, Recurring | Loans | Consumer loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, at fair value		47,525		186,954
Fair Value, Measurements, Recurring | Loans | Corporate loan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, at fair value		5,855		18,510
Fair Value, Measurements, Recurring | Financial Derivatives - Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-						20,001
Fair Value, Measurements, Recurring | Financial Derivatives - Assets | Credit default swaps on asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		347		993		1,472
Fair Value, Measurements, Recurring | Financial Derivatives - Assets | Credit default swaps on corporate bond indices
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		3,420		5,599		733
Fair Value, Measurements, Recurring | Financial Derivatives - Assets | Credit default swaps on corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-				2		2,473
Fair Value, Measurements, Recurring | Financial Derivatives - Assets | Credit default swaps on asset-backed indices
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		2,184		3,319		8,092
Fair Value, Measurements, Recurring | Financial Derivatives - Assets | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		8,519		5,468		7,224
Fair Value, Measurements, Recurring | Financial Derivatives - Assets | TBA securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		962		596
Fair Value, Measurements, Recurring | Financial Derivatives - Assets | Futures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		2		148
Fair Value, Measurements, Recurring | Financial Derivatives - Assets | Forwards
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-				43		6
Fair Value, Measurements, Recurring | Financial Derivatives - Assets | Total return swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		9		620		1
Fair Value, Measurements, Recurring | Financial Derivatives - Assets | Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		36
Fair Value, Measurements, Recurring | Repurchase Agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Repurchase agreements, at fair value						61,274
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in unconsolidated entities, at fair value		0		0
Total assets		2		148		2,200
Other secured borrowings, at fair value		0		0
Total liabilities		(376)		(45)		(17,288)
Fair Value, Measurements, Recurring | Level 1 | Investments Sold Short
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-						(16,933)
Fair Value, Measurements, Recurring | Level 1 | Investments Sold Short | Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-						0
Fair Value, Measurements, Recurring | Level 1 | Investments Sold Short | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-		0		0
Fair Value, Measurements, Recurring | Level 1 | Investments Sold Short | Government debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 1 | Investments Sold Short | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-						0
Fair Value, Measurements, Recurring | Level 1 | Investments Sold Short | Common stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-						(16,933)
Fair Value, Measurements, Recurring | Level 1 | Financial Derivatives - Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-						(355)
Fair Value, Measurements, Recurring | Level 1 | Financial Derivatives - Liabilities | Credit default swaps on corporate bond indices
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 1 | Financial Derivatives - Liabilities | Credit default swaps on corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 1 | Financial Derivatives - Liabilities | Credit default swaps on asset-backed indices
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 1 | Financial Derivatives - Liabilities | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 1 | Financial Derivatives - Liabilities | TBA securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		0		0
Fair Value, Measurements, Recurring | Level 1 | Financial Derivatives - Liabilities | Futures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		(376)		(45)		(355)
Fair Value, Measurements, Recurring | Level 1 | Financial Derivatives - Liabilities | Forwards
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 1 | Financial Derivatives - Liabilities | Total return swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 1 | Other secured borrowings, at fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other secured borrowings, at fair value						0
Fair Value, Measurements, Recurring | Level 1 | Cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents						12,460
Fair Value, Measurements, Recurring | Level 1 | Securities | Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		0		0
Fair Value, Measurements, Recurring | Level 1 | Securities | Non-Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		0		0
Fair Value, Measurements, Recurring | Level 1 | Securities | CMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		0		0
Fair Value, Measurements, Recurring | Level 1 | Securities | CLOs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		0		0
Fair Value, Measurements, Recurring | Level 1 | Securities | Asset-backed securities, backed by consumer loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		0		0
Fair Value, Measurements, Recurring | Level 1 | Securities | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		0		0
Fair Value, Measurements, Recurring | Level 1 | Securities | Corporate equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		0		0
Fair Value, Measurements, Recurring | Level 1 | Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						2,200
Fair Value, Measurements, Recurring | Level 1 | Investments | Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 1 | Investments | Non-Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 1 | Investments | CMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 1 | Investments | CLOs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 1 | Investments | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 1 | Investments | Corporate equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 1 | Investments | Secured notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 1 | Investments | U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 1 | Investments | Residential mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 1 | Investments | Commercial mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 1 | Investments | Consumer loans and asset-backed securities backed by consumer loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 1 | Investments | Real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 1 | Investments | Common stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						2,200
Fair Value, Measurements, Recurring | Level 1 | Loans | Residential mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, at fair value		0		0
Fair Value, Measurements, Recurring | Level 1 | Loans | Commercial mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, at fair value		0		0
Fair Value, Measurements, Recurring | Level 1 | Loans | Consumer loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, at fair value		0		0
Fair Value, Measurements, Recurring | Level 1 | Loans | Corporate loan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, at fair value		0		0
Fair Value, Measurements, Recurring | Level 1 | Financial Derivatives - Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-						0
Fair Value, Measurements, Recurring | Level 1 | Financial Derivatives - Assets | Credit default swaps on asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 1 | Financial Derivatives - Assets | Credit default swaps on corporate bond indices
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 1 | Financial Derivatives - Assets | Credit default swaps on corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-				0		0
Fair Value, Measurements, Recurring | Level 1 | Financial Derivatives - Assets | Credit default swaps on asset-backed indices
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 1 | Financial Derivatives - Assets | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 1 | Financial Derivatives - Assets | TBA securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		0		0
Fair Value, Measurements, Recurring | Level 1 | Financial Derivatives - Assets | Futures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		2		148
Fair Value, Measurements, Recurring | Level 1 | Financial Derivatives - Assets | Forwards
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-				0		0
Fair Value, Measurements, Recurring | Level 1 | Financial Derivatives - Assets | Total return swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 1 | Financial Derivatives - Assets | Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		0
Fair Value, Measurements, Recurring | Level 1 | Repurchase Agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Repurchase agreements, at fair value						0
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in unconsolidated entities, at fair value		0		0
Total assets		1,164,960		2,229,582		1,892,308
Other secured borrowings, at fair value		0		0
Total liabilities		(62,335)		(100,549)		(854,095)
Fair Value, Measurements, Recurring | Level 2 | Investments Sold Short
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-						(833,644)
Fair Value, Measurements, Recurring | Level 2 | Investments Sold Short | Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-						(772,964)
Fair Value, Measurements, Recurring | Level 2 | Investments Sold Short | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-		(218)		(471)
Fair Value, Measurements, Recurring | Level 2 | Investments Sold Short | Government debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-		(38,424)		(72,938)		(54,151)
Fair Value, Measurements, Recurring | Level 2 | Investments Sold Short | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-						(6,529)
Fair Value, Measurements, Recurring | Level 2 | Investments Sold Short | Common stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-						0
Fair Value, Measurements, Recurring | Level 2 | Financial Derivatives - Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-						(20,451)
Fair Value, Measurements, Recurring | Level 2 | Financial Derivatives - Liabilities | Credit default swaps on corporate bond indices
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		(6,438)		(14,524)		(11,557)
Fair Value, Measurements, Recurring | Level 2 | Financial Derivatives - Liabilities | Credit default swaps on corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		(747)		(1,693)		(3,246)
Fair Value, Measurements, Recurring | Level 2 | Financial Derivatives - Liabilities | Credit default swaps on asset-backed indices
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		(130)		(250)		(2,125)
Fair Value, Measurements, Recurring | Level 2 | Financial Derivatives - Liabilities | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		(15,174)		(8,719)		(3,397)
Fair Value, Measurements, Recurring | Level 2 | Financial Derivatives - Liabilities | TBA securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		(925)		(1,012)
Fair Value, Measurements, Recurring | Level 2 | Financial Derivatives - Liabilities | Futures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 2 | Financial Derivatives - Liabilities | Forwards
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		(279)		(169)		(120)
Fair Value, Measurements, Recurring | Level 2 | Financial Derivatives - Liabilities | Total return swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		0		(773)		(6)
Fair Value, Measurements, Recurring | Level 2 | Other secured borrowings, at fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other secured borrowings, at fair value						0
Fair Value, Measurements, Recurring | Level 2 | Cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents						0
Fair Value, Measurements, Recurring | Level 2 | Securities | Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		947,780		1,917,059
Fair Value, Measurements, Recurring | Level 2 | Securities | Non-Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		76,276		76,969
Fair Value, Measurements, Recurring | Level 2 | Securities | CMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		54,505		95,063
Fair Value, Measurements, Recurring | Level 2 | Securities | CLOs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		70,171		125,464
Fair Value, Measurements, Recurring | Level 2 | Securities | Asset-backed securities, backed by consumer loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		0		0
Fair Value, Measurements, Recurring | Level 2 | Securities | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		1,107		0
Fair Value, Measurements, Recurring | Level 2 | Securities | Corporate equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		0		0
Fair Value, Measurements, Recurring | Level 2 | Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						1,812,505
Fair Value, Measurements, Recurring | Level 2 | Investments | Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						1,442,924
Fair Value, Measurements, Recurring | Level 2 | Investments | Non-Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						211,348
Fair Value, Measurements, Recurring | Level 2 | Investments | CMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						33,105
Fair Value, Measurements, Recurring | Level 2 | Investments | CLOs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						108,978
Fair Value, Measurements, Recurring | Level 2 | Investments | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						16,074
Fair Value, Measurements, Recurring | Level 2 | Investments | Corporate equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 2 | Investments | Secured notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 2 | Investments | U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						76
Fair Value, Measurements, Recurring | Level 2 | Investments | Residential mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 2 | Investments | Commercial mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 2 | Investments | Consumer loans and asset-backed securities backed by consumer loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 2 | Investments | Real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 2 | Investments | Common stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 2 | Loans | Residential mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, at fair value		0		0
Fair Value, Measurements, Recurring | Level 2 | Loans | Commercial mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, at fair value		0		0
Fair Value, Measurements, Recurring | Level 2 | Loans | Consumer loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, at fair value		0		0
Fair Value, Measurements, Recurring | Level 2 | Loans | Corporate loan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, at fair value		0		0
Fair Value, Measurements, Recurring | Level 2 | Financial Derivatives - Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-						18,529
Fair Value, Measurements, Recurring | Level 2 | Financial Derivatives - Assets | Credit default swaps on asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 2 | Financial Derivatives - Assets | Credit default swaps on corporate bond indices
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		3,420		5,599		733
Fair Value, Measurements, Recurring | Level 2 | Financial Derivatives - Assets | Credit default swaps on corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-				2		2,473
Fair Value, Measurements, Recurring | Level 2 | Financial Derivatives - Assets | Credit default swaps on asset-backed indices
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		2,184		3,319		8,092
Fair Value, Measurements, Recurring | Level 2 | Financial Derivatives - Assets | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		8,519		5,468		7,224
Fair Value, Measurements, Recurring | Level 2 | Financial Derivatives - Assets | TBA securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		962		596
Fair Value, Measurements, Recurring | Level 2 | Financial Derivatives - Assets | Futures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		0		0
Fair Value, Measurements, Recurring | Level 2 | Financial Derivatives - Assets | Forwards
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-				43		6
Fair Value, Measurements, Recurring | Level 2 | Financial Derivatives - Assets | Total return swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		0		0		1
Fair Value, Measurements, Recurring | Level 2 | Financial Derivatives - Assets | Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		36
Fair Value, Measurements, Recurring | Level 2 | Repurchase Agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Repurchase agreements, at fair value						61,274
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in unconsolidated entities, at fair value		141,620		71,850
Total assets		1,959,802		1,721,275		1,126,078
Other secured borrowings, at fair value		(754,921)		(594,396)
Total liabilities		(755,405)		(594,832)		(297,948)
Fair Value, Measurements, Recurring | Level 3 | Investments Sold Short
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-						0
Fair Value, Measurements, Recurring | Level 3 | Investments Sold Short | Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-						0
Fair Value, Measurements, Recurring | Level 3 | Investments Sold Short | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-		0		0
Fair Value, Measurements, Recurring | Level 3 | Investments Sold Short | Government debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 3 | Investments Sold Short | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-						0
Fair Value, Measurements, Recurring | Level 3 | Investments Sold Short | Common stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments sold short, at fair value-						0
Fair Value, Measurements, Recurring | Level 3 | Financial Derivatives - Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-						0
Fair Value, Measurements, Recurring | Level 3 | Financial Derivatives - Liabilities | Credit default swaps on corporate bond indices
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 3 | Financial Derivatives - Liabilities | Credit default swaps on corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 3 | Financial Derivatives - Liabilities | Credit default swaps on asset-backed indices
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 3 | Financial Derivatives - Liabilities | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 3 | Financial Derivatives - Liabilities | TBA securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		0		0
Fair Value, Measurements, Recurring | Level 3 | Financial Derivatives - Liabilities | Futures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 3 | Financial Derivatives - Liabilities | Forwards
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 3 | Financial Derivatives - Liabilities | Total return swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–liabilities, at fair value-		(484)		(436)		0
Fair Value, Measurements, Recurring | Level 3 | Other secured borrowings, at fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other secured borrowings, at fair value						(297,948)
Fair Value, Measurements, Recurring | Level 3 | Cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents						0
Fair Value, Measurements, Recurring | Level 3 | Securities | Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		11,663		19,904
Fair Value, Measurements, Recurring | Level 3 | Securities | Non-Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		127,838		89,581
Fair Value, Measurements, Recurring | Level 3 | Securities | CMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		63,148		29,805
Fair Value, Measurements, Recurring | Level 3 | Securities | CLOs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		111,100		44,979
Fair Value, Measurements, Recurring | Level 3 | Securities | Asset-backed securities, backed by consumer loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		44,925		48,610
Fair Value, Measurements, Recurring | Level 3 | Securities | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		4,082		1,113
Fair Value, Measurements, Recurring | Level 3 | Securities | Corporate equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities, at fair value(1)(2)		1,590		1,394
Fair Value, Measurements, Recurring | Level 3 | Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						1,124,606
Fair Value, Measurements, Recurring | Level 3 | Investments | Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						7,293
Fair Value, Measurements, Recurring | Level 3 | Investments | Non-Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						91,291
Fair Value, Measurements, Recurring | Level 3 | Investments | CMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						803
Fair Value, Measurements, Recurring | Level 3 | Investments | CLOs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						14,915
Fair Value, Measurements, Recurring | Level 3 | Investments | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						6,318
Fair Value, Measurements, Recurring | Level 3 | Investments | Corporate equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						43,793
Fair Value, Measurements, Recurring | Level 3 | Investments | Secured notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						10,917
Fair Value, Measurements, Recurring | Level 3 | Investments | U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 3 | Investments | Residential mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						496,830
Fair Value, Measurements, Recurring | Level 3 | Investments | Commercial mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						211,185
Fair Value, Measurements, Recurring | Level 3 | Investments | Consumer loans and asset-backed securities backed by consumer loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						206,761
Fair Value, Measurements, Recurring | Level 3 | Investments | Real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						34,500
Fair Value, Measurements, Recurring | Level 3 | Investments | Common stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, at fair value-						0
Fair Value, Measurements, Recurring | Level 3 | Loans | Residential mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, at fair value		1,187,069		932,203
Fair Value, Measurements, Recurring | Level 3 | Loans | Commercial mortgage loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, at fair value		213,031		274,759
Fair Value, Measurements, Recurring | Level 3 | Loans | Consumer loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, at fair value		47,525		186,954
Fair Value, Measurements, Recurring | Level 3 | Loans | Corporate loan [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, at fair value		5,855		18,510
Fair Value, Measurements, Recurring | Level 3 | Financial Derivatives - Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-						1,472
Fair Value, Measurements, Recurring | Level 3 | Financial Derivatives - Assets | Credit default swaps on asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		347		993		1,472
Fair Value, Measurements, Recurring | Level 3 | Financial Derivatives - Assets | Credit default swaps on corporate bond indices
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 3 | Financial Derivatives - Assets | Credit default swaps on corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-				0		0
Fair Value, Measurements, Recurring | Level 3 | Financial Derivatives - Assets | Credit default swaps on asset-backed indices
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 3 | Financial Derivatives - Assets | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		0		0		0
Fair Value, Measurements, Recurring | Level 3 | Financial Derivatives - Assets | TBA securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		0		0
Fair Value, Measurements, Recurring | Level 3 | Financial Derivatives - Assets | Futures
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		0		0
Fair Value, Measurements, Recurring | Level 3 | Financial Derivatives - Assets | Forwards
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-				0		0
Fair Value, Measurements, Recurring | Level 3 | Financial Derivatives - Assets | Total return swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		9		$ 620		0
Fair Value, Measurements, Recurring | Level 3 | Financial Derivatives - Assets | Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial derivatives–assets, at fair value-		$ 0
Fair Value, Measurements, Recurring | Level 3 | Repurchase Agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Repurchase agreements, at fair value						$ 0

[1] Ellington Financial Inc.'s Consolidated Balance Sheet includes assets and liabilities of variable interest entities it has consolidated. See Note 9 for additional details on Ellington Financial Inc.'s consolidated variable interest entities.

[2] Includes assets pledged as collateral to counterparties. See Note 11 for additional details on the Company's borrowings and related collateral.