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Debt - Schedule of Warehouse Lines of Credit (Details) - Line of Credit - Mortgages Segment - USD ($) | Sep. 30, 2020 | Sep. 25, 2020
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Debt Instrument [Line Items] |  |
Maximum Borrowing Capacity | $ 150,000,000 |
Citibank, N.A. |  |
Debt Instrument [Line Items] |  |
Maximum Borrowing Capacity | $ 75,000,000 |
Weighted Average Interest Rate | 1.65% |
Comerica Bank |  |
Debt Instrument [Line Items] |  |
Maximum Borrowing Capacity | $ 75,000,000 | $ 75,000,000.0
Weighted Average Interest Rate | 1.01% |

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