Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Mar. 15, 2021	Jun. 30, 2020
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2020
Entity File Number	001-35808
Entity Registrant Name	READY CAPITAL CORPORATION
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	90-0729143
Entity Address, Address Line One	1251 Avenue of the Americas, 50th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10020
City Area Code	212
Local Phone Number	257-4600
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 359.0
Entity Common Stock, Shares Outstanding		54,434,578
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity Central Index Key	0001527590
Amendment Flag	false
Common Stock
Document Information [Line Items]
Title of 12(b) Security	Common Stock, $0.0001 par value per share
Trading Symbol	RC
Security Exchange Name	NYSE
7.00% Convertible Senior Notes due 2023
Document Information [Line Items]
Title of 12(b) Security	7.00% Convertible Senior Notes due 2023
Trading Symbol	RCA
Security Exchange Name	NYSE
6.50% Senior Notes due 2021
Document Information [Line Items]
Title of 12(b) Security	6.50% Senior Notes due 2021
Trading Symbol	RCP
Security Exchange Name	NYSE
6.20% Senior Notes due 2026
Document Information [Line Items]
Title of 12(b) Security	6.20% Senior Notes due 2026
Trading Symbol	RCB
Security Exchange Name	NYSE
5.75% Senior Notes due 2026
Document Information [Line Items]
Title of 12(b) Security	5.75% Senior Notes due 2026
Trading Symbol	RCC
Security Exchange Name	NYSE