Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value by Hierarchy Level (Details) - USD ($) $ in Thousands		Mar. 31, 2025		Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loaned securities		$ 154,891		$ 139,121
Securitized residential mortgage loans held for investment at fair value		1,058,736		717,227
Securitized nonrecourse debt		1,029,008		703,526
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		6,111,666	[1]	6,343,202	[2]
Derivative assets		3,542		4,274
Mortgage servicing and other related rights		3,427		2,702
Securitized residential mortgage loans held for investment at fair value		1,058,736	[3]	717,228	[4]
Total assets at fair value		7,332,262	[1]	7,206,527	[2]
Derivative Liabilities		$ 929		$ 1,289
Derivative Liability, Statement of Financial Position [Extensible Enumeration]		Other Liabilities		Other Liabilities
Securitized nonrecourse debt		$ 1,029,008	[3]	$ 703,526	[4]
Total liabilities at fair value		1,029,937		704,815
Level I | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		679,994	[1]	632,932	[2]
Derivative assets		0		0
Mortgage servicing and other related rights		0		0
Securitized residential mortgage loans held for investment at fair value		0	[3]	0	[4]
Total assets at fair value		702,497	[1]	641,737	[2]
Derivative Liabilities		0		0
Securitized nonrecourse debt		0	[3]	0	[4]
Total liabilities at fair value		0		0
Level II | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		5,419,038	[1]	5,697,816	[2]
Derivative assets		3,542		4,274
Mortgage servicing and other related rights		0		0
Securitized residential mortgage loans held for investment at fair value		1,058,736	[3]	717,228	[4]
Total assets at fair value		6,613,704	[1]	6,549,634	[2]
Derivative Liabilities		108		40
Securitized nonrecourse debt		1,029,008	[3]	703,526	[4]
Total liabilities at fair value		1,029,116		703,566
Level III | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		12,634	[1]	12,454	[2]
Derivative assets		0		0
Mortgage servicing and other related rights		3,427		2,702
Securitized residential mortgage loans held for investment at fair value		0	[3]	0	[4]
Total assets at fair value		16,061	[1]	15,156	[2]
Derivative Liabilities		821		1,249
Securitized nonrecourse debt		0	[3]	0	[4]
Total liabilities at fair value		821		1,249
Loaned securities | Fair Value, Measurements, Recurring | Corporate bonds and notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loaned securities		132,388	[5]	130,256	[6]
Loaned securities | Fair Value, Measurements, Recurring | Other ABS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loaned securities	[6]			60
Loaned securities | Level I | Fair Value, Measurements, Recurring | Corporate bonds and notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loaned securities		0	[5]	0	[6]
Loaned securities | Level I | Fair Value, Measurements, Recurring | Other ABS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loaned securities	[6]			0
Loaned securities | Level II | Fair Value, Measurements, Recurring | Corporate bonds and notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loaned securities		132,388	[5]	130,256	[6]
Loaned securities | Level II | Fair Value, Measurements, Recurring | Other ABS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loaned securities	[6]			60
Loaned securities | Level III | Fair Value, Measurements, Recurring | Corporate bonds and notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loaned securities		0	[5]	0	[6]
Loaned securities | Level III | Fair Value, Measurements, Recurring | Other ABS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loaned securities	[6]			0
Fixed-maturities available for sale | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		5,112,192		5,074,920
Fixed-maturities available for sale | Fair Value, Measurements, Recurring | U.S. government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		143,236		128,332
Fixed-maturities available for sale | Fair Value, Measurements, Recurring | State and municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		141,878		148,891
Fixed-maturities available for sale | Fair Value, Measurements, Recurring | Corporate bonds and notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		2,463,119		2,476,639
Fixed-maturities available for sale | Fair Value, Measurements, Recurring | RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		1,006,325		1,011,630
Fixed-maturities available for sale | Fair Value, Measurements, Recurring | CMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		394,441		411,999
Fixed-maturities available for sale | Fair Value, Measurements, Recurring | CLO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		395,759		411,462
Fixed-maturities available for sale | Fair Value, Measurements, Recurring | Other ABS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		520,447		438,811
Fixed-maturities available for sale | Fair Value, Measurements, Recurring | Mortgage insurance-linked notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		46,987	[7]	47,156	[8]
Fixed-maturities available for sale | Level I | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		134,828		119,630
Fixed-maturities available for sale | Level I | Fair Value, Measurements, Recurring | U.S. government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		134,828		119,630
Fixed-maturities available for sale | Level I | Fair Value, Measurements, Recurring | State and municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Fixed-maturities available for sale | Level I | Fair Value, Measurements, Recurring | Corporate bonds and notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Fixed-maturities available for sale | Level I | Fair Value, Measurements, Recurring | RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Fixed-maturities available for sale | Level I | Fair Value, Measurements, Recurring | CMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Fixed-maturities available for sale | Level I | Fair Value, Measurements, Recurring | CLO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Fixed-maturities available for sale | Level I | Fair Value, Measurements, Recurring | Other ABS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Fixed-maturities available for sale | Level I | Fair Value, Measurements, Recurring | Mortgage insurance-linked notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0	[7]	0	[8]
Fixed-maturities available for sale | Level II | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		4,977,364		4,955,290
Fixed-maturities available for sale | Level II | Fair Value, Measurements, Recurring | U.S. government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		8,408		8,702
Fixed-maturities available for sale | Level II | Fair Value, Measurements, Recurring | State and municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		141,878		148,891
Fixed-maturities available for sale | Level II | Fair Value, Measurements, Recurring | Corporate bonds and notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		2,463,119		2,476,639
Fixed-maturities available for sale | Level II | Fair Value, Measurements, Recurring | RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		1,006,325		1,011,630
Fixed-maturities available for sale | Level II | Fair Value, Measurements, Recurring | CMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		394,441		411,999
Fixed-maturities available for sale | Level II | Fair Value, Measurements, Recurring | CLO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		395,759		411,462
Fixed-maturities available for sale | Level II | Fair Value, Measurements, Recurring | Other ABS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		520,447		438,811
Fixed-maturities available for sale | Level II | Fair Value, Measurements, Recurring | Mortgage insurance-linked notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		46,987	[7]	47,156	[8]
Fixed-maturities available for sale | Level III | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Fixed-maturities available for sale | Level III | Fair Value, Measurements, Recurring | U.S. government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Fixed-maturities available for sale | Level III | Fair Value, Measurements, Recurring | State and municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Fixed-maturities available for sale | Level III | Fair Value, Measurements, Recurring | Corporate bonds and notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Fixed-maturities available for sale | Level III | Fair Value, Measurements, Recurring | RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Fixed-maturities available for sale | Level III | Fair Value, Measurements, Recurring | CMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Fixed-maturities available for sale | Level III | Fair Value, Measurements, Recurring | CLO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Fixed-maturities available for sale | Level III | Fair Value, Measurements, Recurring | Other ABS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Fixed-maturities available for sale | Level III | Fair Value, Measurements, Recurring | Mortgage insurance-linked notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0	[7]	0	[8]
Trading securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		77,012		82,652
Trading securities | Fair Value, Measurements, Recurring | State and municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		44,377		50,845
Trading securities | Fair Value, Measurements, Recurring | Corporate bonds and notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		24,489		23,940
Trading securities | Fair Value, Measurements, Recurring | RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		2,921		3,029
Trading securities | Fair Value, Measurements, Recurring | CMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		5,225		4,838
Trading securities | Level I | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Trading securities | Level I | Fair Value, Measurements, Recurring | State and municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Trading securities | Level I | Fair Value, Measurements, Recurring | Corporate bonds and notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Trading securities | Level I | Fair Value, Measurements, Recurring | RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Trading securities | Level I | Fair Value, Measurements, Recurring | CMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Trading securities | Level II | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		77,012		82,652
Trading securities | Level II | Fair Value, Measurements, Recurring | State and municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		44,377		50,845
Trading securities | Level II | Fair Value, Measurements, Recurring | Corporate bonds and notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		24,489		23,940
Trading securities | Level II | Fair Value, Measurements, Recurring | RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		2,921		3,029
Trading securities | Level II | Fair Value, Measurements, Recurring | CMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		5,225		4,838
Trading securities | Level III | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Trading securities | Level III | Fair Value, Measurements, Recurring | State and municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Trading securities | Level III | Fair Value, Measurements, Recurring | Corporate bonds and notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Trading securities | Level III | Fair Value, Measurements, Recurring | RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Trading securities | Level III | Fair Value, Measurements, Recurring | CMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Equity securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		110,614		138,189
Equity securities | Level I | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		101,343		128,368
Equity securities | Level II | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		2,725		3,275
Equity securities | Level III | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		6,546		6,546
Equity securities | Loaned securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loaned securities		22,503	[5]	8,805	[6]
Equity securities | Loaned securities | Level I | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loaned securities		22,503	[5]	8,805	[6]
Equity securities | Loaned securities | Level II | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loaned securities		0	[5]	0	[6]
Equity securities | Loaned securities | Level III | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loaned securities		0	[5]	0	[6]
Residential mortgage loans held for sale | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		279,097	[3]	519,885	[4]
Residential mortgage loans held for sale | Level I | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0	[3]	0	[4]
Residential mortgage loans held for sale | Level II | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		279,097	[3]	519,885	[4]
Residential mortgage loans held for sale | Level III | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0	[3]	0	[4]
Other invested assets | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		6,088	[1],[9]	5,908	[2],[10]
Other invested assets | Level I | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0	[1],[9]	0	[2],[10]
Other invested assets | Level II | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0	[1],[9]	0	[2],[10]
Other invested assets | Level III | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		6,088	[1],[9]	5,908	[2],[10]
Short-term investments | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		526,663		521,648
Short-term investments | Fair Value, Measurements, Recurring | State and municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		895		1,750
Short-term investments | Fair Value, Measurements, Recurring | Corporate bonds and notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		33,283		49,905
Short-term investments | Fair Value, Measurements, Recurring | Other ABS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		8,302		16,054
Short-term investments | Fair Value, Measurements, Recurring | Other investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		40,360	[11]	69,005	[12]
Short-term investments | Fair Value, Measurements, Recurring | Money market instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		443,823		384,934
Short-term investments | Level I | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		443,823		384,934
Short-term investments | Level I | Fair Value, Measurements, Recurring | State and municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Short-term investments | Level I | Fair Value, Measurements, Recurring | Corporate bonds and notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Short-term investments | Level I | Fair Value, Measurements, Recurring | Other ABS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Short-term investments | Level I | Fair Value, Measurements, Recurring | Other investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0	[11]	0	[12]
Short-term investments | Level I | Fair Value, Measurements, Recurring | Money market instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		443,823		384,934
Short-term investments | Level II | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		82,840		136,714
Short-term investments | Level II | Fair Value, Measurements, Recurring | State and municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		895		1,750
Short-term investments | Level II | Fair Value, Measurements, Recurring | Corporate bonds and notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		33,283		49,905
Short-term investments | Level II | Fair Value, Measurements, Recurring | Other ABS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		8,302		16,054
Short-term investments | Level II | Fair Value, Measurements, Recurring | Other investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		40,360	[11]	69,005	[12]
Short-term investments | Level II | Fair Value, Measurements, Recurring | Money market instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Short-term investments | Level III | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Short-term investments | Level III | Fair Value, Measurements, Recurring | State and municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Short-term investments | Level III | Fair Value, Measurements, Recurring | Corporate bonds and notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Short-term investments | Level III | Fair Value, Measurements, Recurring | Other ABS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Short-term investments | Level III | Fair Value, Measurements, Recurring | Other investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0	[11]	0	[12]
Short-term investments | Level III | Fair Value, Measurements, Recurring | Money market instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investments at fair value		0		0
Partnership investments | Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other invested assets—at fair value		$ 2,000		$ 2,000

[1] Does not include other invested assets of $2 million that are primarily invested in limited partnership investments valued using the net asset value as a practical expedient.

[2] Does not include other invested assets of $2 million that are primarily invested in limited partnership investments valued using the net asset value as a practical expedient.

[3] See Note 7 for more information about our residential mortgage loan activities, including our private label securitization program.

[4] See Note 7 for more information about our residential mortgage loan activities, including our private label securitization program.

[5] Securities loaned to third-party borrowers under securities lending agreements are classified as other assets on our condensed consolidated balance sheets. See Note 6 for more information on our securities lending agreements.

[6] Securities loaned to third-party borrowers under securities lending agreements are classified as other assets in our condensed consolidated balance sheets. See Note 6 for more information on our securities lending agreements.

[7] Includes mortgage insurance-linked notes purchased by Radian Group in connection with the XOL Program. See Note 8 for more information.

[8] Includes mortgage insurance-linked notes purchased by Radian Group in connection with the XOL Program. See Note 8 for more information.

[9] Consists primarily of interests in private debt and equity investments.

[10] Consists primarily of interests in private debt and equity investments.

[11] Comprises short-term certificates of deposit and commercial paper.

[12] Comprises short-term certificates of deposit and commercial paper.