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Business Purpose Loans - Product Types and Characteristics of Business Purpose Loans (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) loan	Dec. 31, 2020 USD ($) loan
Single-family rental loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	245	65
Total Principal	$ 348,232	$ 234,475
30-89 Days DQ	89	0
90+ Days DQ	5,384	7,127
Single-family rental loans | $0 to $250
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	0	0
Loan Balance, maximum	$ 250	$ 250
Number of Loans | loan	74	8
Total Principal	$ 11,515	$ 1,060
30-89 Days DQ	89	0
90+ Days DQ	$ 171	$ 635
Single-family rental loans | $0 to $250 | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	3.75%	6.25%
Single-family rental loans | $0 to $250 | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	7.75%	7.75%
Single-family rental loans | $251 to $500
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	$ 251	$ 251
Loan Balance, maximum	$ 500	$ 500
Number of Loans | loan	57	1
Total Principal	$ 21,284	$ 483
30-89 Days DQ	0	0
90+ Days DQ	$ 0	$ 0
Single-family rental loans | $251 to $500 | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	3.75%	5.97%
Single-family rental loans | $251 to $500 | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	6.50%	5.97%
Single-family rental loans | $501 to $750
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	$ 501	$ 501
Loan Balance, maximum	$ 750	$ 750
Number of Loans | loan	28	6
Total Principal	$ 16,773	$ 3,632
30-89 Days DQ	0	0
90+ Days DQ	$ 536	$ 0
Single-family rental loans | $501 to $750 | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	3.75%	5.84%
Single-family rental loans | $501 to $750 | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	6.70%	6.75%
Single-family rental loans | $751 to $1,000
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	$ 751	$ 751
Loan Balance, maximum	$ 1,000	$ 1,000
Number of Loans | loan	12	10
Total Principal	$ 9,764	$ 8,936
30-89 Days DQ	0	0
90+ Days DQ	$ 0	$ 1,815
Single-family rental loans | $751 to $1,000 | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	4.13%	5.15%
Single-family rental loans | $751 to $1,000 | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	5.43%	6.39%
Single-family rental loans | Over $1,000
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, maximum	$ 1,000	$ 1,000
Number of Loans | loan	74	40
Total Principal	$ 288,896	$ 220,364
30-89 Days DQ	0	0
90+ Days DQ	$ 4,677	$ 4,677
Single-family rental loans | Over $1,000 | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	3.38%	3.82%
Single-family rental loans | Over $1,000 | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	7.15%	5.95%
Bridge loans held-for-investment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan		1,725
Total Principal		$ 649,531
30-89 Days DQ		7,475
90+ Days DQ		$ 39,415
Bridge loans held-for-investment | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan		591
Total Principal		$ 307,185
30-89 Days DQ		7,475
90+ Days DQ		$ 39,415
Bridge loans held-for-investment | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan		1,134
Total Principal		$ 342,346
30-89 Days DQ		0
90+ Days DQ		0
Bridge loans held-for-investment | $0 to $250 | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum		0
Loan Balance, maximum		$ 250
Number of Loans | loan		393
Total Principal		$ 44,225
30-89 Days DQ		6,530
90+ Days DQ		1,668
Bridge loans held-for-investment | $0 to $250 | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum		0
Loan Balance, maximum		$ 250
Number of Loans | loan		1,047
Total Principal		$ 84,371
30-89 Days DQ		0
90+ Days DQ		$ 0
Bridge loans held-for-investment | $0 to $250 | Minimum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate		6.99%
Bridge loans held-for-investment | $0 to $250 | Minimum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate		5.75%
Bridge loans held-for-investment | $0 to $250 | Maximum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate		12.00%
Bridge loans held-for-investment | $0 to $250 | Maximum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate		10.25%
Bridge loans held-for-investment | $251 to $500 | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum		$ 251
Loan Balance, maximum		$ 500
Number of Loans | loan		90
Total Principal		$ 30,472
30-89 Days DQ		945
90+ Days DQ		1,423
Bridge loans held-for-investment | $251 to $500 | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum		251
Loan Balance, maximum		$ 500
Number of Loans | loan		20
Total Principal		$ 7,135
30-89 Days DQ		0
90+ Days DQ		$ 0
Bridge loans held-for-investment | $251 to $500 | Minimum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate		6.99%
Bridge loans held-for-investment | $251 to $500 | Minimum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate		6.65%
Bridge loans held-for-investment | $251 to $500 | Maximum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate		13.00%
Bridge loans held-for-investment | $251 to $500 | Maximum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate		8.60%
Bridge loans held-for-investment | $501 to $750 | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum		$ 501
Loan Balance, maximum		$ 750
Number of Loans | loan		31
Total Principal		$ 18,843
30-89 Days DQ		0
90+ Days DQ		540
Bridge loans held-for-investment | $501 to $750 | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum		501
Loan Balance, maximum		$ 750
Number of Loans | loan		8
Total Principal		$ 4,940
30-89 Days DQ		0
90+ Days DQ		$ 0
Bridge loans held-for-investment | $501 to $750 | Minimum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate		6.99%
Bridge loans held-for-investment | $501 to $750 | Minimum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate		7.05%
Bridge loans held-for-investment | $501 to $750 | Maximum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate		10.00%
Bridge loans held-for-investment | $501 to $750 | Maximum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate		8.50%
Bridge loans held-for-investment | $751 to $1,000 | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum		$ 751
Loan Balance, maximum		$ 1,000
Number of Loans | loan		12
Total Principal		$ 10,430
30-89 Days DQ		0
90+ Days DQ		943
Bridge loans held-for-investment | $751 to $1,000 | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum		751
Loan Balance, maximum		$ 1,000
Number of Loans | loan		9
Total Principal		$ 7,795
30-89 Days DQ		0
90+ Days DQ		$ 0
Bridge loans held-for-investment | $751 to $1,000 | Minimum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate		6.99%
Bridge loans held-for-investment | $751 to $1,000 | Minimum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate		6.50%
Bridge loans held-for-investment | $751 to $1,000 | Maximum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate		9.50%
Bridge loans held-for-investment | $751 to $1,000 | Maximum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate		8.00%
Bridge loans held-for-investment | Over $1,000 | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, maximum		$ 1,000
Number of Loans | loan		65
Total Principal		$ 203,215
30-89 Days DQ		0
90+ Days DQ		34,841
Bridge loans held-for-investment | Over $1,000 | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, maximum		$ 1,000
Number of Loans | loan		50
Total Principal		$ 238,105
30-89 Days DQ		0
90+ Days DQ		$ 0
Bridge loans held-for-investment | Over $1,000 | Minimum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate		6.04%
Bridge loans held-for-investment | Over $1,000 | Minimum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate		6.50%
Bridge loans held-for-investment | Over $1,000 | Maximum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate		10.25%
Bridge loans held-for-investment | Over $1,000 | Maximum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate		9.50%
CAFL(1) | Single-family rental loans held-for-investment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	1,173	1,094
Total Principal	$ 3,340,949	$ 3,017,137
30-89 Days DQ	28,472	4,631
90+ Days DQ	41,999	61,440
CAFL(1) | Single-family rental loans held-for-investment | $0 to $250
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	0	0
Loan Balance, maximum	$ 250	$ 250
Number of Loans | loan	5	5
Total Principal	$ 398	$ 1,016
30-89 Days DQ	20	0
90+ Days DQ	$ 0	$ 0
CAFL(1) | Single-family rental loans held-for-investment | $0 to $250 | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	5.77%	5.77%
CAFL(1) | Single-family rental loans held-for-investment | $0 to $250 | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	6.80%	7.05%
CAFL(1) | Single-family rental loans held-for-investment | $251 to $500
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	$ 251	$ 251
Loan Balance, maximum	$ 500	$ 500
Number of Loans | loan	73	67
Total Principal	$ 32,106	$ 29,977
30-89 Days DQ	466	0
90+ Days DQ	$ 257	$ 0
CAFL(1) | Single-family rental loans held-for-investment | $251 to $500 | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	4.64%	4.64%
CAFL(1) | Single-family rental loans held-for-investment | $251 to $500 | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	7.03%	6.96%
CAFL(1) | Single-family rental loans held-for-investment | $501 to $750
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	$ 501	$ 501
Loan Balance, maximum	$ 750	$ 750
Number of Loans | loan	199	212
Total Principal	$ 123,685	$ 130,665
30-89 Days DQ	717	0
90+ Days DQ	$ 1,224	$ 1,752
CAFL(1) | Single-family rental loans held-for-investment | $501 to $750 | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	4.00%	4.12%
CAFL(1) | Single-family rental loans held-for-investment | $501 to $750 | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	7.06%	7.06%
CAFL(1) | Single-family rental loans held-for-investment | $751 to $1,000
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	$ 751	$ 751
Loan Balance, maximum	$ 1,000	$ 1,000
Number of Loans | loan	134	131
Total Principal	$ 116,724	$ 113,874
30-89 Days DQ	788	764
90+ Days DQ	$ 0	$ 750
CAFL(1) | Single-family rental loans held-for-investment | $751 to $1,000 | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	4.20%	4.33%
CAFL(1) | Single-family rental loans held-for-investment | $751 to $1,000 | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	7.23%	7.23%
CAFL(1) | Single-family rental loans held-for-investment | Over $1,000
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, maximum	$ 1,000	$ 1,000
Number of Loans | loan	762	679
Total Principal	$ 3,068,036	$ 2,741,605
30-89 Days DQ	26,481	3,867
90+ Days DQ	$ 40,518	$ 58,938
CAFL(1) | Single-family rental loans held-for-investment | Over $1,000 | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	3.81%	3.93%
CAFL(1) | Single-family rental loans held-for-investment | Over $1,000 | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	7.57%	7.57%
CAFL(1) | Bridge loans held-for-investment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	1,640
Total Principal	$ 274,617
30-89 Days DQ	3,426
90+ Days DQ	$ 0
CAFL(1) | Bridge loans held-for-investment | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	920
Total Principal	$ 135,878
30-89 Days DQ	0
90+ Days DQ	$ 0
CAFL(1) | Bridge loans held-for-investment | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	720
Total Principal	$ 138,739
30-89 Days DQ	3,426
90+ Days DQ	0
CAFL(1) | Bridge loans held-for-investment | $0 to $250 | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	0
Loan Balance, maximum	$ 250
Number of Loans | loan	808
Total Principal	$ 58,110
30-89 Days DQ	0
90+ Days DQ	0
CAFL(1) | Bridge loans held-for-investment | $0 to $250 | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	0
Loan Balance, maximum	$ 250
Number of Loans | loan	681
Total Principal	$ 77,001
30-89 Days DQ	2,091
90+ Days DQ	$ 0
CAFL(1) | Bridge loans held-for-investment | $0 to $250 | Minimum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	5.45%
CAFL(1) | Bridge loans held-for-investment | $0 to $250 | Minimum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	5.85%
CAFL(1) | Bridge loans held-for-investment | $0 to $250 | Maximum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	10.65%
CAFL(1) | Bridge loans held-for-investment | $0 to $250 | Maximum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	10.50%
CAFL(1) | Bridge loans held-for-investment | $251 to $500 | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	$ 251
Loan Balance, maximum	$ 500
Number of Loans | loan	70
Total Principal	$ 23,488
30-89 Days DQ	0
90+ Days DQ	0
CAFL(1) | Bridge loans held-for-investment | $251 to $500 | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	251
Loan Balance, maximum	$ 500
Number of Loans | loan	13
Total Principal	$ 4,088
30-89 Days DQ	783
90+ Days DQ	$ 0
CAFL(1) | Bridge loans held-for-investment | $251 to $500 | Minimum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	5.95%
CAFL(1) | Bridge loans held-for-investment | $251 to $500 | Minimum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	5.95%
CAFL(1) | Bridge loans held-for-investment | $251 to $500 | Maximum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	10.50%
CAFL(1) | Bridge loans held-for-investment | $251 to $500 | Maximum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	8.35%
CAFL(1) | Bridge loans held-for-investment | $501 to $750 | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	$ 501
Loan Balance, maximum	$ 750
Number of Loans | loan	24
Total Principal	$ 15,041
30-89 Days DQ	0
90+ Days DQ	0
CAFL(1) | Bridge loans held-for-investment | $501 to $750 | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	501
Loan Balance, maximum	$ 750
Number of Loans | loan	5
Total Principal	$ 3,097
30-89 Days DQ	552
90+ Days DQ	$ 0
CAFL(1) | Bridge loans held-for-investment | $501 to $750 | Minimum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	5.95%
CAFL(1) | Bridge loans held-for-investment | $501 to $750 | Minimum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	5.75%
CAFL(1) | Bridge loans held-for-investment | $501 to $750 | Maximum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	9.99%
CAFL(1) | Bridge loans held-for-investment | $501 to $750 | Maximum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	8.50%
CAFL(1) | Bridge loans held-for-investment | $751 to $1,000 | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	$ 751
Loan Balance, maximum	$ 1,000
Number of Loans | loan	7
Total Principal	$ 6,375
30-89 Days DQ	0
90+ Days DQ	0
CAFL(1) | Bridge loans held-for-investment | $751 to $1,000 | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	751
Loan Balance, maximum	$ 1,000
Number of Loans | loan	3
Total Principal	$ 2,546
30-89 Days DQ	0
90+ Days DQ	$ 0
CAFL(1) | Bridge loans held-for-investment | $751 to $1,000 | Minimum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	5.45%
CAFL(1) | Bridge loans held-for-investment | $751 to $1,000 | Minimum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	6.75%
CAFL(1) | Bridge loans held-for-investment | $751 to $1,000 | Maximum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	8.99%
CAFL(1) | Bridge loans held-for-investment | $751 to $1,000 | Maximum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	7.25%
CAFL(1) | Bridge loans held-for-investment | Over $1,000 | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, maximum	$ 1,000
Number of Loans | loan	11
Total Principal	$ 32,864
30-89 Days DQ	0
90+ Days DQ	0
CAFL(1) | Bridge loans held-for-investment | Over $1,000 | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, maximum	$ 1,000
Number of Loans | loan	18
Total Principal	$ 52,007
30-89 Days DQ	0
90+ Days DQ	$ 0
CAFL(1) | Bridge loans held-for-investment | Over $1,000 | Minimum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	6.25%
CAFL(1) | Bridge loans held-for-investment | Over $1,000 | Minimum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	5.75%
CAFL(1) | Bridge loans held-for-investment | Over $1,000 | Maximum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	9.00%
CAFL(1) | Bridge loans held-for-investment | Over $1,000 | Maximum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	10.00%
Redwood | Bridge loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	1,134
Total Principal	$ 670,392
30-89 Days DQ	17,393
90+ Days DQ	$ 18,032
Redwood | Bridge loans | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	187
Total Principal	$ 96,066
30-89 Days DQ	13,995
90+ Days DQ	$ 17,116
Redwood | Bridge loans | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | loan	947
Total Principal	$ 574,326
30-89 Days DQ	3,398
90+ Days DQ	916
Redwood | Bridge loans | $0 to $250 | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	0
Loan Balance, maximum	$ 250
Number of Loans | loan	115
Total Principal	$ 12,850
30-89 Days DQ	426
90+ Days DQ	1,493
Redwood | Bridge loans | $0 to $250 | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	0
Loan Balance, maximum	$ 250
Number of Loans | loan	737
Total Principal	$ 65,611
30-89 Days DQ	773
90+ Days DQ	$ 0
Redwood | Bridge loans | $0 to $250 | Minimum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	5.95%
Redwood | Bridge loans | $0 to $250 | Minimum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	4.25%
Redwood | Bridge loans | $0 to $250 | Maximum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	12.00%
Redwood | Bridge loans | $0 to $250 | Maximum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	10.00%
Redwood | Bridge loans | $251 to $500 | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	$ 251
Loan Balance, maximum	$ 500
Number of Loans | loan	26
Total Principal	$ 9,294
30-89 Days DQ	253
90+ Days DQ	1,619
Redwood | Bridge loans | $251 to $500 | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	251
Loan Balance, maximum	$ 500
Number of Loans | loan	123
Total Principal	$ 42,248
30-89 Days DQ	0
90+ Days DQ	$ 0
Redwood | Bridge loans | $251 to $500 | Minimum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	5.95%
Redwood | Bridge loans | $251 to $500 | Minimum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	4.25%
Redwood | Bridge loans | $251 to $500 | Maximum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	10.00%
Redwood | Bridge loans | $251 to $500 | Maximum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	8.25%
Redwood | Bridge loans | $501 to $750 | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	$ 501
Loan Balance, maximum	$ 750
Number of Loans | loan	13
Total Principal	$ 8,498
30-89 Days DQ	637
90+ Days DQ	2,012
Redwood | Bridge loans | $501 to $750 | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	501
Loan Balance, maximum	$ 750
Number of Loans | loan	9
Total Principal	$ 5,724
30-89 Days DQ	0
90+ Days DQ	$ 0
Redwood | Bridge loans | $501 to $750 | Minimum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	6.70%
Redwood | Bridge loans | $501 to $750 | Minimum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	5.75%
Redwood | Bridge loans | $501 to $750 | Maximum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	10.00%
Redwood | Bridge loans | $501 to $750 | Maximum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	8.60%
Redwood | Bridge loans | $751 to $1,000 | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	$ 751
Loan Balance, maximum	$ 1,000
Number of Loans | loan	9
Total Principal	$ 7,544
30-89 Days DQ	980
90+ Days DQ	0
Redwood | Bridge loans | $751 to $1,000 | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, minimum	751
Loan Balance, maximum	$ 1,000
Number of Loans | loan	12
Total Principal	$ 10,200
30-89 Days DQ	945
90+ Days DQ	$ 916
Redwood | Bridge loans | $751 to $1,000 | Minimum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	5.45%
Redwood | Bridge loans | $751 to $1,000 | Minimum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	5.75%
Redwood | Bridge loans | $751 to $1,000 | Maximum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	10.00%
Redwood | Bridge loans | $751 to $1,000 | Maximum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	7.50%
Redwood | Bridge loans | Over $1,000 | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, maximum	$ 1,000
Number of Loans | loan	24
Total Principal	$ 57,880
30-89 Days DQ	11,699
90+ Days DQ	11,992
Redwood | Bridge loans | Over $1,000 | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance, maximum	$ 1,000
Number of Loans | loan	66
Total Principal	$ 450,543
30-89 Days DQ	1,680
90+ Days DQ	$ 0
Redwood | Bridge loans | Over $1,000 | Minimum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	5.45%
Redwood | Bridge loans | Over $1,000 | Minimum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	4.90%
Redwood | Bridge loans | Over $1,000 | Maximum | Fixed loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	10.00%
Redwood | Bridge loans | Over $1,000 | Maximum | Floating Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Rate	9.50%

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Mortgage Loan On Real Estate Maximum Amount

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Mortgage Loan On Real Estate Minimum Amount

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- Definition

Amount of principal due on loans that have been delinquent thirty to eighty-nine days as of the balance sheet date.

+ References

No definition available.

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- Definition

Interest rate of mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-X (SX)
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-Section 12
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Number of mortgage loans within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-X (SX)
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Amount of principal due on delinquent mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
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-Section 12
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

This is the sum of principal amount outstanding for both securitized and unsecuritized loans of all types.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-SubTopic 20
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