Mortgage-Backed Securities and other securities - Financing Receivables (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Components of interest income
Net (Premium Amortization/Amortization Basis) Discount Accretion			$ (2,599)	$ (204)
Interest Income	$ 39,577	$ 41,195	75,219	87,212
Agency RMBS
Components of interest income
Coupon Interest	5	12	13	27
Net (Premium Amortization/Amortization Basis) Discount Accretion	(2)	(8)	(6)	(19)
Interest Income	3	4	7	8
Non-Agency CMBS
Components of interest income
Coupon Interest	2,129	2,213	5,101	4,550
Net (Premium Amortization/Amortization Basis) Discount Accretion	401	2,131	(1)	4,561
Interest Income	2,530	4,344	5,100	9,111
Non-Agency RMBS
Components of interest income
Coupon Interest	813	740	1,358	1,153
Net (Premium Amortization/Amortization Basis) Discount Accretion	(152)	(406)	(167)	(464)
Interest Income	661	334	1,191	689
Other securities
Components of interest income
Coupon Interest	767	1,083	1,655	2,674
Net (Premium Amortization/Amortization Basis) Discount Accretion	272	(175)	38	(944)
Interest Income	1,039	908	1,693	1,730
Total
Components of interest income
Coupon Interest	3,714	4,048	8,127	8,404
Net (Premium Amortization/Amortization Basis) Discount Accretion	519	1,542	(136)	3,134
Interest Income	$ 4,233	$ 5,590	$ 7,991	$ 11,538

The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

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Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
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Amount before accretion (amortization) of purchase discount (premium) of interest income on operating securities.

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