Consolidated Securitization Vehicles and Other Variable Interest Entities - Assets and Liabilities Related to the Consolidated VIEs (Details) - USD ($) $ in Thousands		Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Assets:
Non-Agency RMBS, at fair value		$ 1,092,205		$ 1,147,481
Loans held for investment, at fair value		11,929,537		11,359,236
Accrued interest receivable		71,281		61,768
Other assets		73,026		133,866
Total assets	[1]	13,509,643		13,401,991
Liabilities:
Securitized debt, collateralized by Non-Agency RMBS		77,195		78,542
Securitized debt at fair value, collateralized by Loans held for investment		8,041,276		7,100,742
Accrued interest payable		37,425		30,696
Other liabilities		28,407		16,616
Total liabilities	[1]	10,930,240		10,735,188
Allowance for credit losses		13,013	$ 10,251	7,188	$ 4,890	$ 453	$ 213
Non-Agency RMBS
Liabilities:
Allowance for credit losses		13,000		7,000
Variable Interest Entities, Primary Beneficiary
Assets:
Non-Agency RMBS, at fair value		262,440		276,030
Loans held for investment, at fair value		10,780,926		9,855,390
Accrued interest receivable		56,713		47,553
Other assets		16,408		20,293
Total assets		11,116,487		10,199,266
Liabilities:
Securitized debt, collateralized by Non-Agency RMBS		77,195		78,542
Securitized debt at fair value, collateralized by Loans held for investment		7,652,488		6,673,917
Accrued interest payable		24,263		17,427
Other liabilities		2,210		2,239
Total liabilities		7,756,156		6,772,125
Variable Interest Entities, Primary Beneficiary | Non-Agency RMBS
Liabilities:
Allowance for credit losses		$ 4,000		$ 2,000

[1] The Company's consolidated statements of financial condition include assets of consolidated variable interest entities, or VIEs, that can only be used to settle obligations and liabilities of the VIE for which creditors do not have recourse to the primary beneficiary (Chimera Investment Corporation). As of June 30, 2023, and December 31, 2022, total assets of consolidated VIEs were $11,116,487 and $10,199,266, respectively, and total liabilities of consolidated VIEs were $7,756,156 and $6,772,125, respectively. See Note 8 for further discussion.