Stockholders' Equity Narrative (Details)			3 Months Ended			12 Months Ended
	Nov. 30, 2023 USD ($) shares	Jun. 06, 2022 USD ($) $ / shares shares	Dec. 31, 2025 USD ($) $ / shares shares	Sep. 30, 2025 USD ($) $ / shares shares	Jun. 30, 2025 USD ($) $ / shares	Dec. 31, 2025 USD ($) $ / shares shares	Dec. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares	Apr. 23, 2025 USD ($)	Mar. 17, 2025 USD ($)	Dec. 31, 2022 USD ($)	Apr. 30, 2021 USD ($)
Class of Stock [Line Items]
Total stockholders' equity			$ 3,541,277,000			$ 3,541,277,000	$ 3,499,949,000	$ 3,390,765,000			$ 3,950,531,000
Net Income (Loss) Available to Common Stockholders, Diluted						(189,185,000)	(87,100,000)	1,938,925,000
Net Income (Loss) Available to Common Stockholders, Basic						(189,185,000)	(87,100,000)	1,938,925,000
Common Shares Surrendered			$ 3,714,000			$ 3,714,000	$ 2,708,000	$ 5,421,000
Common Stock Acquired, Average Cost Per Share | $ / shares						$ 14.61	$ 14.42	$ 23.76
Preferred Stock, Shares Issued | shares		20,530,000	513,250			513,250	513,250
Preferred Stock, Par or Stated Value Per Share | $ / shares		$ 0.01
Preferred Stock Depository Share			$ 25.00			$ 25.00
Preferred Stock, Liquidation Preference Per Share | $ / shares		$ 1,000
Payments of Stock Issuance Costs		$ 14,700,000
Stock Issued During Period, Value, New Issues		513,300,000
Net proceeds from preferred stock offering		$ 498,500,000
Preferred Stock, Ownership Interest, Percentage		0.025
Net earnings (loss)						$ 228,973,000	$ 126,888,000	$ (1,899,137,000)
Preferred Stock, Shares Outstanding | shares			513,250			513,250	513,250
Common Stock, Shares, Issued, Acquisitions | shares			150,039,018			150,039,018	158,557,735
Common Stock, Shares, Outstanding | shares			149,963,520			149,963,520	158,346,529
Preferred Stock, Shares Authorized | shares	50,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares			$ 24.60			$ 24.60
Sale of Stock, Number of Shares Issued in Transaction | shares						1,150,000
Stock Repurchase Plan - March 17, 2025
Class of Stock [Line Items]
Common Stock Acquired, Average Cost Per Share | $ / shares					$ 14.36
Share Repurchase Program, Authorized, Amount										$ 150,000,000.0
Stock Repurchased During Period, Value					$ 38,500,000
Share Repurchase Program, Remaining Authorized, Amount			$ 114,500,000			$ 114,500,000
Stock Repurchase Plan - April 23, 2025
Class of Stock [Line Items]
Common Stock Acquired, Average Cost Per Share | $ / shares			$ 16.48	$ 12.65		$ 13.59
Share Repurchase Program, Authorized, Amount									$ 300,000,000.0
Stock Repurchased During Period, Value			$ 35,500,000	$ 111,500,000		$ 185,500,000
Stock Repurchased During Period, Shares | shares				8,809,814		13,648,429
Warburg Investors
Class of Stock [Line Items]
Sale of Stock, Percentage of Ownership after Transaction						9.63%
Centerbridge Investor
Class of Stock [Line Items]
Common Stock, Warrants Issued, Per Share Price	$ 15.375
BANC
Class of Stock [Line Items]
Common Stock, Shares, Outstanding | shares			158,346,529			158,346,529
Common Stock, Shares Authorized | shares			446,863,844			446,863,844
April 30, 2021 Issuance
Class of Stock [Line Items]
Subordinated debt												$ 400,000,000
Preferred Class A
Class of Stock [Line Items]
Investment Interest Rate		7.75%
Preferred Class A | Pacific Western Bank
Class of Stock [Line Items]
Investment Interest Rate		7.75%
Class B Non-Voting
Class of Stock [Line Items]
Net Income (Loss) Available to Common Stockholders, Basic						$ (565,000)	$ (246,000)	$ 920,000
Common Stock, Shares, Issued, Acquisitions | shares			477,321			477,321	477,321
Common Stock, Shares, Outstanding | shares			477,321			477,321
Common Stock, Shares Authorized | shares			3,136,156			3,136,156
NVCE Non-voting Share Class
Class of Stock [Line Items]
Common Stock, Shares, Outstanding | shares			9,790,600			9,790,600	9,790,600
Preferred Stock, Shares Authorized | shares			27,000,000			27,000,000	5,017,064
Sale of Stock, Price Per Share | $ / shares			$ 16.38			$ 16.38
NVCE Non-voting Share Class | Warburg Investors
Class of Stock [Line Items]
Common Stock, Shares, Issued, Acquisitions | shares	15,853,659
NVCE Non-voting Share Class | Centerbridge Investor
Class of Stock [Line Items]
Common Stock, Shares, Issued, Acquisitions | shares	3,048,780