Regulatory Requirements - Narrative (Details) $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($) loan	Dec. 31, 2021 USD ($)
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]
Number of days from fiscal year end that servicer is obliged to provide audited financial statements	90 days
Capital requirement based on outstanding UPB of owned and subserviced portfolio	$ 372.4
Covenant liquidity requirement	41.4
Capital	589.4
Cash and cash equivalents	$ 208.0	$ 192.8
Percentage portfolio of loans serviced or subserviced	2.00%
Amount	199,600.0	205,600.0
Percentage of portfolio to total forward owned servicing	10.00%
Percentage of government-insured loans UPB to total UPB serviced and sub-serviced	4.00%
Percentage of Originations and purchases to total originations and purchases	11.00%
CA DFPI
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]
Litigation Settlement, Amount Awarded to Other Party	$ 2.5
Owned Mortgage Servicing Rights
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]
Amount	126,200.0	127,900.0
Owned Mortgage Servicing Rights \| Loan Count
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]
Loans originated and purchased \| loan	6,148
Amount \| loan	83,282
Owned Mortgage Servicing Rights \| Unpaid Principal Balance
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]
Loans originated and purchased	2,000.0
Amount	12,700.0
PMC
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]
Cash and cash equivalents	$ 181.5

Total of property assets serviced as measured by UPB.

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Capital Requirement, Unpaid Principal Balance

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Debt Instrument, Covenant Compliance, Liquidity Requirement

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- Definition

Loans originated and purchased

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- Definition

Number of days from fiscal year end that servicer is obliged to provide audited financial statements.

+ References

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- Definition

Percentage of government-insured loans UPB to total UPB serviced and sub-serviced

+ References

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Percentage of forward government-insured loans originated and purchased to total during the period

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Percentage of government-insured loans UPB to total forward owned servicing loans UPB

+ References

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Percentage of restriction on portfolio of New York loans serviced or subserviced to the aggregate portfolio of loans service or subservice.

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Amount of total capital as defined by regulatory framework.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-URI https://asc.fasb.org/extlink&oid=117337116&loc=SL5958568-112826

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section 45
-Paragraph 20
-URI https://asc.fasb.org/extlink&oid=118262064&loc=SL116631418-115840

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
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-URI https://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section 45
-Paragraph 21
-URI https://asc.fasb.org/extlink&oid=118262064&loc=SL116631419-115840

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(1))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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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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Amount awarded to other party in judgment or settlement of litigation.

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