Debt - Warehouse Lines of Credit (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Warehouse credit facilities	$ 40,308,000	$ 21,302,000
Warehouse Agreement Borrowings
Debt Instrument [Line Items]
Borrowing Capacity as of September 30, 2020	105,000,000
Warehouse credit facilities	40,308,000	21,302,000
Western Alliance Bank \| Warehouse Agreement Borrowings
Debt Instrument [Line Items]
Borrowing Capacity as of September 30, 2020	50,000,000
Warehouse credit facilities	13,459,000	8,489,000
Texas Capital Bank, N.A. \| Warehouse Agreement Borrowings
Debt Instrument [Line Items]
Borrowing Capacity as of September 30, 2020	40,000,000
Warehouse credit facilities	19,650,000	10,210,000
Flagstar Bank \| Warehouse Agreement Borrowings
Debt Instrument [Line Items]
Borrowing Capacity as of September 30, 2020	15,000,000
Warehouse credit facilities	$ 7,199,000	$ 2,603,000

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.

No definition available.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Carrying value as of the balance sheet date of the outstanding short-term borrowings under a revolving line of credit used by mortgage bankers to finance the origination or purchase of loans.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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