Residential Loans - Schedule of Product Types and Characteristics of Residential Loans (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) loan	Dec. 31, 2022 USD ($) loan
Residential loans, held-for-sale, at fair value
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	874	994
Total Principal	$ 916,877	$ 822,063
30-89 Days DQ	7,951	5,282
90+ Days DQ	$ 0	$ 208
Residential loans, held-for-sale, at fair value | Hybrid ARM loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	2	8
Total Principal	$ 787	$ 4,403
30-89 Days DQ	0	0
90+ Days DQ	$ 0	0
Residential loans, held-for-sale, at fair value | Hybrid ARM loans | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	6.25%
Residential loans, held-for-sale, at fair value | Hybrid ARM loans | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	7.63%
Residential loans, held-for-sale, at fair value | Hybrid ARM loans | $0 to $250
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 0	0
Loan Balance, maximum	$ 250	$ 250
Number of Loans | loan	1	1
Total Principal	$ 38	$ 41
30-89 Days DQ	0	0
90+ Days DQ	$ 0	$ 0
Residential loans, held-for-sale, at fair value | Hybrid ARM loans | $0 to $250 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	7.63%	6.00%
Residential loans, held-for-sale, at fair value | Hybrid ARM loans | $0 to $250 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	7.63%	6.00%
Residential loans, held-for-sale, at fair value | Hybrid ARM loans | $501 to $750
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 501	$ 501
Loan Balance, maximum	$ 750	$ 750
Number of Loans | loan	1	6
Total Principal	$ 749	$ 3,590
30-89 Days DQ	0	0
90+ Days DQ	$ 0	$ 0
Residential loans, held-for-sale, at fair value | Hybrid ARM loans | $501 to $750 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	6.25%	3.63%
Residential loans, held-for-sale, at fair value | Hybrid ARM loans | $501 to $750 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	6.25%	6.50%
Residential loans, held-for-sale, at fair value | Hybrid ARM loans | $751 to $1,000
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum		$ 751
Loan Balance, maximum		$ 1,000
Number of Loans | loan		1
Total Principal		$ 772
30-89 Days DQ		0
90+ Days DQ		$ 0
Residential loans, held-for-sale, at fair value | Hybrid ARM loans | $751 to $1,000 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate		4.25%
Residential loans, held-for-sale, at fair value | Hybrid ARM loans | $751 to $1,000 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate		4.25%
Residential loans, held-for-sale, at fair value | Fixed loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	872	986
Total Principal	$ 916,090	$ 817,660
30-89 Days DQ	7,951	5,282
90+ Days DQ	$ 0	208
Residential loans, held-for-sale, at fair value | Fixed loans | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	2.50%
Residential loans, held-for-sale, at fair value | Fixed loans | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	8.50%
Residential loans, held-for-sale, at fair value | Fixed loans | $0 to $250
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 0	0
Loan Balance, maximum	$ 250	$ 250
Number of Loans | loan	4	25
Total Principal	$ 699	$ 4,088
30-89 Days DQ	0	0
90+ Days DQ	$ 0	$ 208
Residential loans, held-for-sale, at fair value | Fixed loans | $0 to $250 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	3.50%	3.13%
Residential loans, held-for-sale, at fair value | Fixed loans | $0 to $250 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	4.38%	5.63%
Residential loans, held-for-sale, at fair value | Fixed loans | $251 to $500
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 251	$ 251
Loan Balance, maximum	$ 500	$ 500
Number of Loans | loan	13	138
Total Principal	$ 5,092	$ 57,202
30-89 Days DQ	0	444
90+ Days DQ	$ 0	$ 0
Residential loans, held-for-sale, at fair value | Fixed loans | $251 to $500 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	3.00%	3.38%
Residential loans, held-for-sale, at fair value | Fixed loans | $251 to $500 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	8.25%	8.25%
Residential loans, held-for-sale, at fair value | Fixed loans | $501 to $750
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 501	$ 501
Loan Balance, maximum	$ 750	$ 750
Number of Loans | loan	87	283
Total Principal	$ 58,011	$ 186,202
30-89 Days DQ	2,472	537
90+ Days DQ	$ 0	$ 0
Residential loans, held-for-sale, at fair value | Fixed loans | $501 to $750 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	2.50%	2.88%
Residential loans, held-for-sale, at fair value | Fixed loans | $501 to $750 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	7.75%	8.25%
Residential loans, held-for-sale, at fair value | Fixed loans | $751 to $1,000
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 751	$ 751
Loan Balance, maximum	$ 1,000	$ 1,000
Number of Loans | loan	367	286
Total Principal	$ 325,880	$ 248,246
30-89 Days DQ	4,045	1,726
90+ Days DQ	$ 0	$ 0
Residential loans, held-for-sale, at fair value | Fixed loans | $751 to $1,000 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	2.50%	2.75%
Residential loans, held-for-sale, at fair value | Fixed loans | $751 to $1,000 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	8.50%	9.25%
Residential loans, held-for-sale, at fair value | Fixed loans | Over $1,000
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, maximum	$ 1,000	$ 1,000
Number of Loans | loan	401	254
Total Principal	$ 526,408	$ 321,922
30-89 Days DQ	1,434	2,575
90+ Days DQ	$ 0	$ 0
Residential loans, held-for-sale, at fair value | Fixed loans | Over $1,000 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	2.75%	2.88%
Residential loans, held-for-sale, at fair value | Fixed loans | Over $1,000 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	8.50%	9.13%
Residential loans, held-for-investment
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
90+ Days DQ	$ 145,330
Legacy Sequoia | Residential loans, held-for-investment
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	1,059	1,304
Total Principal	$ 156,053	$ 204,404
30-89 Days DQ	6,178	7,001
90+ Days DQ	$ 4,141	$ 6,824
Legacy Sequoia | Residential loans, held-for-investment | Hybrid ARM loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	5	7
Total Principal	$ 1,403	$ 2,031
30-89 Days DQ	0	0
90+ Days DQ	$ 0	0
Legacy Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	4.88%
Legacy Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	6.63%
Legacy Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | $0 to $250
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 0	0
Loan Balance, maximum	$ 250	$ 250
Number of Loans | loan	2	3
Total Principal	$ 380	$ 610
30-89 Days DQ	0	0
90+ Days DQ	$ 0	$ 0
Legacy Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | $0 to $250 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	6.63%	4.63%
Legacy Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | $0 to $250 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	6.63%	4.63%
Legacy Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | $251 to $500
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 251	$ 251
Loan Balance, maximum	$ 500	$ 500
Number of Loans | loan	3	4
Total Principal	$ 1,023	$ 1,421
30-89 Days DQ	0	0
90+ Days DQ	$ 0	$ 0
Legacy Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | $251 to $500 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	4.88%	2.88%
Legacy Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | $251 to $500 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	6.50%	4.63%
Legacy Sequoia | Residential loans, held-for-investment | ARM loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	1,054	1,297
Total Principal	$ 154,650	$ 202,373
30-89 Days DQ	6,178	7,001
90+ Days DQ	$ 4,141	6,824
Legacy Sequoia | Residential loans, held-for-investment | ARM loans | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	1.25%
Legacy Sequoia | Residential loans, held-for-investment | ARM loans | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	7.88%
Legacy Sequoia | Residential loans, held-for-investment | ARM loans | $0 to $250
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 0	0
Loan Balance, maximum	$ 250	$ 250
Number of Loans | loan	886	1,070
Total Principal	$ 74,241	$ 93,286
30-89 Days DQ	3,085	3,792
90+ Days DQ	$ 1,581	$ 2,607
Legacy Sequoia | Residential loans, held-for-investment | ARM loans | $0 to $250 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	1.25%	1.25%
Legacy Sequoia | Residential loans, held-for-investment | ARM loans | $0 to $250 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	7.88%	6.13%
Legacy Sequoia | Residential loans, held-for-investment | ARM loans | $251 to $500
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 251	$ 251
Loan Balance, maximum	$ 500	$ 500
Number of Loans | loan	116	158
Total Principal	$ 39,469	$ 54,904
30-89 Days DQ	973	1,232
90+ Days DQ	$ 434	$ 1,649
Legacy Sequoia | Residential loans, held-for-investment | ARM loans | $251 to $500 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	1.25%	1.25%
Legacy Sequoia | Residential loans, held-for-investment | ARM loans | $251 to $500 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	7.75%	6.13%
Legacy Sequoia | Residential loans, held-for-investment | ARM loans | $501 to $750
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 501	$ 501
Loan Balance, maximum	$ 750	$ 750
Number of Loans | loan	35	47
Total Principal	$ 21,126	$ 28,796
30-89 Days DQ	1,206	0
90+ Days DQ	$ 579	$ 1,796
Legacy Sequoia | Residential loans, held-for-investment | ARM loans | $501 to $750 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	1.63%	1.63%
Legacy Sequoia | Residential loans, held-for-investment | ARM loans | $501 to $750 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	7.63%	5.38%
Legacy Sequoia | Residential loans, held-for-investment | ARM loans | $751 to $1,000
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 751	$ 751
Loan Balance, maximum	$ 1,000	$ 1,000
Number of Loans | loan	11	13
Total Principal	$ 9,412	$ 11,047
30-89 Days DQ	914	929
90+ Days DQ	$ 1,547	$ 772
Legacy Sequoia | Residential loans, held-for-investment | ARM loans | $751 to $1,000 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	1.63%	1.63%
Legacy Sequoia | Residential loans, held-for-investment | ARM loans | $751 to $1,000 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	7.75%	6.00%
Legacy Sequoia | Residential loans, held-for-investment | ARM loans | Over $1,000
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum
Loan Balance, maximum	$ 1,000	$ 1,000
Number of Loans | loan	6	9
Total Principal	$ 10,402	$ 14,340
30-89 Days DQ	0	1,048
90+ Days DQ	$ 0	$ 0
Legacy Sequoia | Residential loans, held-for-investment | ARM loans | Over $1,000 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	1.63%	1.63%
Legacy Sequoia | Residential loans, held-for-investment | ARM loans | Over $1,000 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	7.25%	5.63%
Sequoia | Residential loans, held-for-investment
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	6,070	4,624
Total Principal	$ 5,242,860	$ 3,847,091
30-89 Days DQ	24,499	15,522
90+ Days DQ	$ 8,882	$ 7,799
Sequoia | Residential loans, held-for-investment | Hybrid ARM loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	17	17
Total Principal	$ 13,292	$ 13,295
30-89 Days DQ	624	0
90+ Days DQ	$ 0	637
Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	3.38%
Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	7.63%
Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | $251 to $500
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 251	251
Loan Balance, maximum	$ 500	$ 500
Number of Loans | loan	1	2
Total Principal	$ 459	$ 798
30-89 Days DQ	0	0
90+ Days DQ	$ 0	$ 0
Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | $251 to $500 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	3.50%	3.50%
Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | $251 to $500 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	3.50%	3.63%
Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | $501 to $750
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 501	$ 501
Loan Balance, maximum	$ 750	$ 750
Number of Loans | loan	10	8
Total Principal	$ 6,570	$ 5,370
30-89 Days DQ	624	0
90+ Days DQ	$ 0	$ 637
Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | $501 to $750 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	3.38%	3.38%
Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | $501 to $750 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	7.13%	4.38%
Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | $751 to $1,000
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 751	$ 751
Loan Balance, maximum	$ 1,000	$ 1,000
Number of Loans | loan	3	4
Total Principal	$ 2,512	$ 3,294
30-89 Days DQ	0	0
90+ Days DQ	$ 0	$ 0
Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | $751 to $1,000 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	4.25%	4.00%
Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | $751 to $1,000 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	7.63%	5.63%
Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | Over $1,000
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, maximum	$ 1,000	$ 1,000
Number of Loans | loan	3	3
Total Principal	$ 3,751	$ 3,833
30-89 Days DQ	0	0
90+ Days DQ	$ 0	$ 0
Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | Over $1,000 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	4.00%	4.00%
Sequoia | Residential loans, held-for-investment | Hybrid ARM loans | Over $1,000 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	6.88%	5.00%
Sequoia | Residential loans, held-for-investment | Fixed loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	6,053	4,607
Total Principal	$ 5,229,568	$ 3,833,796
30-89 Days DQ	23,875	15,522
90+ Days DQ	$ 8,882	7,162
Sequoia | Residential loans, held-for-investment | Fixed loans | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	1.88%
Sequoia | Residential loans, held-for-investment | Fixed loans | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	8.50%
Sequoia | Residential loans, held-for-investment | Fixed loans | $0 to $250
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 0	0
Loan Balance, maximum	$ 250	$ 250
Number of Loans | loan	68	52
Total Principal	$ 11,708	$ 9,145
30-89 Days DQ	0	0
90+ Days DQ	$ 0	$ 0
Sequoia | Residential loans, held-for-investment | Fixed loans | $0 to $250 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	2.50%	2.63%
Sequoia | Residential loans, held-for-investment | Fixed loans | $0 to $250 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	7.00%	5.25%
Sequoia | Residential loans, held-for-investment | Fixed loans | $251 to $500
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 251	$ 251
Loan Balance, maximum	$ 500	$ 500
Number of Loans | loan	195	146
Total Principal	$ 81,978	$ 61,208
30-89 Days DQ	1,294	2,348
90+ Days DQ	$ 454	$ 877
Sequoia | Residential loans, held-for-investment | Fixed loans | $251 to $500 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	2.38%	2.38%
Sequoia | Residential loans, held-for-investment | Fixed loans | $251 to $500 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	7.50%	6.75%
Sequoia | Residential loans, held-for-investment | Fixed loans | $501 to $750
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 501	$ 501
Loan Balance, maximum	$ 750	$ 750
Number of Loans | loan	2,187	1,884
Total Principal	$ 1,404,672	$ 1,211,531
30-89 Days DQ	6,356	7,064
90+ Days DQ	$ 3,272	$ 1,840
Sequoia | Residential loans, held-for-investment | Fixed loans | $501 to $750 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	2.13%	2.13%
Sequoia | Residential loans, held-for-investment | Fixed loans | $501 to $750 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	8.00%	6.38%
Sequoia | Residential loans, held-for-investment | Fixed loans | $751 to $1,000
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 751	$ 751
Loan Balance, maximum	$ 1,000	$ 1,000
Number of Loans | loan	2,118	1,600
Total Principal	$ 1,844,914	$ 1,396,210
30-89 Days DQ	6,239	2,425
90+ Days DQ	$ 2,476	$ 1,849
Sequoia | Residential loans, held-for-investment | Fixed loans | $751 to $1,000 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	2.13%	2.13%
Sequoia | Residential loans, held-for-investment | Fixed loans | $751 to $1,000 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	8.38%	6.00%
Sequoia | Residential loans, held-for-investment | Fixed loans | Over $1,000
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, maximum	$ 1,000	$ 1,000
Number of Loans | loan	1,485	925
Total Principal	$ 1,886,296	$ 1,155,702
30-89 Days DQ	9,986	3,685
90+ Days DQ	$ 2,680	$ 2,596
Sequoia | Residential loans, held-for-investment | Fixed loans | Over $1,000 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	1.88%	1.88%
Sequoia | Residential loans, held-for-investment | Fixed loans | Over $1,000 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	8.50%	5.88%
Freddie Mac SLST | Residential loans, held-for-investment | Fixed loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of Loans | loan	10,302	10,882
Total Principal	$ 1,614,974	$ 1,719,236
30-89 Days DQ	309,252	302,095
90+ Days DQ	$ 132,307	209,397
Freddie Mac SLST | Residential loans, held-for-investment | Fixed loans | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	2.00%
Freddie Mac SLST | Residential loans, held-for-investment | Fixed loans | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	11.00%
Freddie Mac SLST | Residential loans, held-for-investment | Fixed loans | $0 to $250
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 0	0
Loan Balance, maximum	$ 250	$ 250
Number of Loans | loan	8,545	8,979
Total Principal	$ 1,048,487	$ 1,105,116
30-89 Days DQ	200,761	197,718
90+ Days DQ	$ 77,435	$ 120,210
Freddie Mac SLST | Residential loans, held-for-investment | Fixed loans | $0 to $250 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	2.00%	2.00%
Freddie Mac SLST | Residential loans, held-for-investment | Fixed loans | $0 to $250 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	11.00%	11.00%
Freddie Mac SLST | Residential loans, held-for-investment | Fixed loans | $251 to $500
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 251	$ 251
Loan Balance, maximum	$ 500	$ 500
Number of Loans | loan	1,721	1,867
Total Principal	$ 546,236	$ 593,781
30-89 Days DQ	106,309	103,339
90+ Days DQ	$ 49,530	$ 80,993
Freddie Mac SLST | Residential loans, held-for-investment | Fixed loans | $251 to $500 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	2.00%	2.00%
Freddie Mac SLST | Residential loans, held-for-investment | Fixed loans | $251 to $500 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	7.75%	7.75%
Freddie Mac SLST | Residential loans, held-for-investment | Fixed loans | $501 to $750
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, minimum	$ 501	$ 501
Loan Balance, maximum	$ 750	$ 750
Number of Loans | loan	35	35
Total Principal	$ 19,241	$ 19,328
30-89 Days DQ	2,182	1,038
90+ Days DQ	$ 4,332	$ 7,184
Freddie Mac SLST | Residential loans, held-for-investment | Fixed loans | $501 to $750 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	2.00%	2.00%
Freddie Mac SLST | Residential loans, held-for-investment | Fixed loans | $501 to $750 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	5.50%	5.50%
Freddie Mac SLST | Residential loans, held-for-investment | Fixed loans | Over $1,000
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Loan Balance, maximum	$ 1,000	$ 1,000
Number of Loans | loan	1	1
Total Principal	$ 1,010	$ 1,010
30-89 Days DQ	0	0
90+ Days DQ	$ 1,010	$ 1,010
Freddie Mac SLST | Residential loans, held-for-investment | Fixed loans | Over $1,000 | Minimum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	4.00%	4.00%
Freddie Mac SLST | Residential loans, held-for-investment | Fixed loans | Over $1,000 | Maximum
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	4.00%	4.00%