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Credit Facilities and Notes Payable - Additional Information (Details) | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2021 USD ($) Facility | Aug. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Line Of Credit Facility [Line Items] |  |  |
Number of facilities | Facility | 3 |  |
Borrowing Capacity | $ 1,025,000,000 |  | $ 425,000,000
Financial Institutions [Member] |  |  |
Line Of Credit Facility [Line Items] |  |  |
Number of facilities | Facility | 2 |  |
Related Parties [Member] |  |  |
Line Of Credit Facility [Line Items] |  |  |
Number of facilities | Facility | 1 |  |
Senior Secured Credit Facilities With Financial Institutions 1 [Member] |  |  |
Line Of Credit Facility [Line Items] |  |  |
Borrowing Capacity |  |  | 200,000,000.0
Borrowing Capacity | $ 400,000,000.0 |  |
Uncommitted amount | $ 100,000,000 |  |
Maturity term | 12 months |  |
Senior Secured Credit Facilities With Financial Institutions 1 [Member] | London Interbank Offered Rate (LIBOR) |  |  |
Line Of Credit Facility [Line Items] |  |  |
Interest rate margin | 2.50% |  |
Senior Secured Credit Facilities With Financial Institutions 2 [Member] |  |  |
Line Of Credit Facility [Line Items] |  |  |
Line Of Credit Facility Maximum Amount Outstanding During Period | $ 300,000,000.0 |  |
Line Of Credit Facility Expiration Period | 24 months |  |
Line Of Credit Additional Borrowing Capacity | $ 100,000,000.0 |  |
Senior Secured Credit Facilities With Financial Institutions 2 [Member] | London Interbank Offered Rate (LIBOR) |  |  |
Line Of Credit Facility [Line Items] |  |  |
Interest rate margin | 2.50% |  |
Senior Secured Credit Facility [Member] |  |  |
Line Of Credit Facility [Line Items] |  |  |
Interest rate margin | 5.74% |  |
Debt instrument, interest rate | 5.79% |  |
Revolving Credit Facility [Member] |  |  |
Line Of Credit Facility [Line Items] |  |  |
Borrowing Capacity | $ 225,000,000 |  | 225,000,000
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) |  |  |
Line Of Credit Facility [Line Items] |  |  |
Interest rate margin | 4.00% |  |
Mezzanine Credit Facility With Related Party [Member] |  |  |
Line Of Credit Facility [Line Items] |  |  |
Debt instrument, interest rate | 13.00% |  |
First American Credit Agreement [Member] |  |  |
Line Of Credit Facility [Line Items] |  |  |
Borrowing amount under credit agreement |  | $ 25,000,000.0 |
Loans, outstanding amount |  | $ 0 |
First American Credit Agreement [Member] | First American Title Insurance Company |  |  |
Line Of Credit Facility [Line Items] |  |  |
Related party, holding percentage | 5.00% |  |
Borrowing amount under credit agreement | $ 30,000,000.0 |  |
Debt instrument, interest rate | 12.00% |  |
Secured Promissory Note [Member] |  |  |
Line Of Credit Facility [Line Items] |  |  |
Secured Debt | $ 4,300,000 |  |
Repayments of Secured Debt | $ 3,800,000 |  |
Unsecured Notes Payable [Member] |  |  |
Line Of Credit Facility [Line Items] |  |  |
Unsecured Notes Payable |  |  | 1,300
Unsecured Notes Payable to Related Party |  |  | $ 2,400

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- Definition Carrying value as of the balance sheet date of the sum of the obligations to contract holders to provide to them an agreed upon rate of return pursuant to the terms of the underlying contract. These contracts represent lending by the contract holders to the entity in return for a guaranteed (primarily fixed) interest rate until maturity, unless called earlier if the contracts provide that option to the contract holders (usually institutions). There is little or no insurance risk for the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.14) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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