CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands									3 Months Ended								12 Months Ended
	Dec. 14, 2020	Sep. 16, 2020	Jun. 15, 2020	Mar. 11, 2020	Dec. 11, 2019	Sep. 10, 2019	Jun. 11, 2019	Mar. 12, 2019	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
CONSOLIDATED STATEMENTS OF INCOME
Interest income																	$ 258,636	$ 229,916	$ 169,499
Interest expense																	(175,481)	(151,880)	(109,238)
Net interest income before provision for loan losses																	83,155	78,036	60,261
Provision for (Recovery of) loan losses																	(34,726)	(3,684)	(1,701)
Net interest income after provision for (recovery of) loan losses													$ 22,319	$ 19,640	$ 19,933	$ 12,460	48,429	74,352	58,560
Non-interest income
Residential mortgage banking activities																	252,720	83,539	59,852
Net realized gains on financial instruments and real estate owned																	31,913	28,958	38,409
Net unrealized gain (loss) on financial instruments																	(48,101)	(18,790)	4,853
Servicing income, net of amortization and impairment of $5,975, $5,811 and $5,509																	38,594	30,665	27,075
Income on purchased future receivables, net of allowance for doubtful accounts of $11,769 and $5,082																	15,711	2,362
Income (loss) on unconsolidated joint ventures																	2,404	6,088	12,148
Other income																	41,516	11,078	5,586
Gain on bargain purchase																		30,728
Total non-interest income (loss)													45,422	39,984	32,956	56,266	334,757	174,628	147,923
Non-interest expense
Employee compensation and benefits																	(91,920)	(51,237)	(56,602)
Allocated employee compensation and benefits from related party																	(7,000)	(5,473)	(4,200)
Variable expenses on residential mortgage banking activities																	(114,510)	(51,760)	(22,228)
Professional fees																	(13,360)	(7,434)	(6,999)
Management fees - related party																	(10,682)	(9,578)	(8,176)
Incentive fees - related party																	(5,973)	(106)	(1,143)
Loan servicing expense																	(30,856)	(17,976)	(15,545)
Merger related expenses																	(63)	(7,750)
Other operating expenses																	(54,369)	(33,162)	(28,747)
Total non-interest expense													(48,755)	(49,842)	(44,600)	(41,279)	(328,733)	(184,476)	(143,640)
Income (loss) before provision for income taxes																	54,453	64,504	62,843
Income tax (provision) benefit																	(8,384)	10,552	(1,386)
Net income (loss)									$ 27,559	$ 35,363	$ 34,663	$ (51,516)	20,934	12,427	11,245	30,450	46,069	75,056	61,457
Less: Net income (loss) attributable to non-controlling interest																	1,199	2,088	2,199
Net income (loss) attributable to Ready Capital Corporation									$ 26,911	$ 34,558	$ 33,853	$ (50,452)	$ 20,428	$ 12,104	$ 10,969	$ 29,467	$ 44,870	$ 72,968	$ 59,258
Earnings (loss) per basic common share
Earnings (loss) per common share - basic									$ 0.49	$ 0.63	$ 0.62	$ (0.98)	$ 0.43	$ 0.27	$ 0.25	$ 0.90	$ 0.81	$ 1.72	$ 1.84
Earnings (loss) per diluted common share
Earnings (loss) per common share - basic									0.49	0.63	0.62	(0.98)	0.43	0.27	0.25	0.90	0.81	1.72	1.84
Earnings (loss) per common share - diluted									0.49	0.63	0.62	(0.98)	0.43	0.27	0.25	0.90	$ 0.81	$ 1.72	$ 1.84
Weighted-average shares outstanding
Basic																	53,736,523	42,011,750	32,085,975
Diluted																	53,818,378	42,047,648	32,102,184
Dividends declared per share of common stock	$ 0.35	$ 0.30	$ 0.25	$ 0.40	$ 0.40	$ 0.40	$ 0.40	$ 0.40	$ 0.35	$ 0.30	$ 0.25	$ 0.40	$ 0.40	$ 0.40	$ 0.40	$ 0.40	$ 1.30	$ 1.60	$ 1.57