Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Nov. 30, 2023	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Earnings Per Share [Abstract]
Net Income (Loss) Available to Common Stockholders, Basic		$ 189,185	$ 87,100	$ (1,938,925)
Weighted Average Number of Shares Issued, Basic		159,934,000	168,921,000	86,563,000
Weighted Average Number of Shares, Restricted Stock		(127,000)	(480)	(1,169)
Weighted Average Number of Shares Outstanding, Basic, Total		159,807,000	168,441,000	85,394,000
Basic income per share (usd per share)		$ 1.18	$ 0.52	$ (22.71)
Net Income Loss From Continuing Operation Available To Common Stockholders Basic		$ 189,185	$ 87,100	$ (1,938,925)
Diluted income per share (usd per share)		$ 1.17	$ 0.52	$ (22.71)
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income (Loss) Available to Common Stockholders, Basic		$ 189,185	$ 87,100	$ (1,938,925)
Undistributed Earnings, Basic		$ 189,055	$ 87,158	$ (1,938,925)
Weighted Average Number of Shares Issued, Basic		159,934,000	168,921,000	86,563,000
Weighted Average Unvested Restricted Stock Outstanding		$ (127)	$ (480)	$ (1,169)
Weighted Average Number of Shares, Restricted Stock		127,000	480	1,169
Weighted Average Number of Shares Outstanding, Basic		159,807,000	168,441,000	85,394,000
Basic income per share (usd per share)		$ 1.18	$ 0.52	$ (22.71)
Net Income Loss From Continuing Operation Available To Common Stockholders Basic		$ 189,185	$ 87,100	$ (1,938,925)
Weighted Average Number of Shares Outstanding, Diluted		161,724,000	168,684,000	85,394,000
Earnings Per Share, Diluted		$ 1.17	$ 0.52	$ (22.71)
Net Income (Loss) Available to Common Stockholders, Diluted		$ 189,185	$ 87,100	$ (1,938,925)
Net Earnings Reallocation for Voting Common Stock		$ 0
Conversion to Voting Common Shares		0
Common Shares, After Conversion, Earnings per Share, Diluted		161,724,000
NVCE Non-voting Share Class
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Earnings Reallocation for Voting Common Stock		$ 0
Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Allocated to Common and Equivalent Shares		130
Pacific Western Bank
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Stock Issued During Period, Shares, Acquisitions	0.6569
Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Allocated to Common and Equivalent Shares			58	0
Voting Common Stock
Earnings Per Share [Abstract]
Net Income (Loss) Available to Common Stockholders, Basic		179,149	81,619	(1,917,121)
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income (Loss) Available to Common Stockholders, Basic		179,149	$ 81,619	$ (1,917,121)
Voting Common Stock | Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Allocated to Common and Equivalent Shares		130
Net Income (Loss) Available to Common Stockholders, Diluted		179,149
Net Earnings Reallocation for Voting Common Stock		$ 7
Conversion to Voting Common Shares		9,151,000
Common Shares, After Conversion, Earnings per Share, Diluted		161,247,000
Voting Common Stock | Common Stock | NVCE Non-voting Share Class
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Earnings Reallocation for Voting Common Stock		$ 9,471
Voting Common Stock | Common Stock
Earnings Per Share [Abstract]
Weighted Average Number of Shares Issued, Basic		151,456,000	158,321,000	85,603,000
Weighted Average Number of Shares Outstanding, Basic, Total		151,329,000	157,841,000	84,434,000
Basic income per share (usd per share)		$ 1.18	$ 0.52	$ (22.71)
Net Income Loss From Continuing Operation Available To Common Stockholders Basic		$ 188,627	$ 81,619	$ (1,917,121)
Diluted income per share (usd per share)		$ 1.17	$ 0.52	$ (22.71)
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Allocated to Common and Equivalent Shares			$ 58	$ 0
Undistributed Earnings, Basic		$ 179,019	$ 81,677	$ (1,917,121)
Weighted Average Number of Shares Issued, Basic		151,456,000	158,321,000	85,603,000
Weighted Average Unvested Restricted Stock Outstanding		$ (127)	$ (480)	$ (1,169)
Weighted Average Number of Shares Outstanding, Basic		151,329,000	157,841,000	84,434,000
Basic income per share (usd per share)		$ 1.18	$ 0.52	$ (22.71)
Net Income Loss From Continuing Operation Available To Common Stockholders Basic		$ 188,627	$ 81,619	$ (1,917,121)
Weighted Average Number of Shares Outstanding, Diluted		152,096,000	158,084,000	84,434,000
Earnings Per Share, Diluted		$ 1.17	$ 0.52	$ (22.71)
Nonvoting Common Stock
Earnings Per Share [Abstract]
Net Income (Loss) Available to Common Stockholders, Basic		$ 9,471	$ 5,235	$ (20,884)
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income (Loss) Available to Common Stockholders, Basic		9,471	5,235	(20,884)
Nonvoting Common Stock | Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Allocated to Common and Equivalent Shares		0
Nonvoting Common Stock | Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Allocated to Common and Equivalent Shares			0	0
Undistributed Earnings, Basic		9,471	5,235	(20,884)
Class B Non-Voting
Earnings Per Share [Abstract]
Net Income (Loss) Available to Common Stockholders, Basic		565	246	(920)
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income (Loss) Available to Common Stockholders, Basic		565	$ 246	$ (920)
Class B Non-Voting | Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Allocated to Common and Equivalent Shares		0
Net Income (Loss) Available to Common Stockholders, Diluted		565
Net Earnings Reallocation for Voting Common Stock		$ (7)
Conversion to Voting Common Shares		0
Common Shares, After Conversion, Earnings per Share, Diluted		477,000
Class B Non-Voting | Common Stock | NVCE Non-voting Share Class
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Earnings Reallocation for Voting Common Stock		$ 0
Class B Non-Voting | Common Stock
Earnings Per Share [Abstract]
Weighted Average Number of Shares Issued, Basic		477,000	477,000	40,000
Weighted Average Number of Shares Outstanding, Basic, Total		477,000	477,000	40,000
Basic income per share (usd per share)		$ 1.18	$ 0.52	$ (22.71)
Net Income Loss From Continuing Operation Available To Common Stockholders Basic		$ 558	$ 246	$ (920)
Diluted income per share (usd per share)		$ 1.17	$ 0.52	$ (22.71)
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Allocated to Common and Equivalent Shares			$ 0	$ 0
Undistributed Earnings, Basic		$ 565	$ 246	$ (920)
Weighted Average Number of Shares Issued, Basic		477,000	477,000	40,000
Weighted Average Unvested Restricted Stock Outstanding		$ 0	$ 0	$ 0
Weighted Average Number of Shares Outstanding, Basic		477,000	477,000	40,000
Basic income per share (usd per share)		$ 1.18	$ 0.52	$ (22.71)
Net Income Loss From Continuing Operation Available To Common Stockholders Basic		$ 558	$ 246	$ (920)
Weighted Average Number of Shares Outstanding, Diluted		477,000	477,000	40,000
Earnings Per Share, Diluted		$ 1.17	$ 0.52	$ (22.71)
Non-Voting Common Stock Equivalents | Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income (Loss) Available to Common Stockholders, Diluted		$ 9,471
Net Earnings Reallocation for Voting Common Stock		$ 1,234
Conversion to Voting Common Shares		0
Common Shares, After Conversion, Earnings per Share, Diluted		9,151,000
Non-Voting Common Stock Equivalents | Common Stock | NVCE Non-voting Share Class
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Earnings Reallocation for Voting Common Stock		$ 0
Non-Voting Common Stock Equivalents | Common Stock
Earnings Per Share [Abstract]
Weighted Average Number of Shares Issued, Basic		8,001,000	10,123,000	920,000
Weighted Average Number of Shares Outstanding, Basic, Total		8,001,000	10,123,000	920,000
Basic income per share (usd per share)		$ 1.18	$ 0.52	$ (22.71)
Net Income Loss From Continuing Operation Available To Common Stockholders Basic		$ 10,705	$ 5,235	$ (20,884)
Diluted income per share (usd per share)		$ 1.17	$ 0.52	$ (22.71)
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Weighted Average Number of Shares Issued, Basic		8,001,000	10,123,000	920,000
Weighted Average Unvested Restricted Stock Outstanding		$ 0	$ 0	$ 0
Weighted Average Number of Shares Outstanding, Basic		8,001,000	10,123,000	920,000
Basic income per share (usd per share)		$ 1.18	$ 0.52	$ (22.71)
Net Income Loss From Continuing Operation Available To Common Stockholders Basic		$ 10,705	$ 5,235	$ (20,884)
Weighted Average Number of Shares Outstanding, Diluted		9,151,000	10,123,000	920,000
Earnings Per Share, Diluted		$ 1.17	$ 0.52	$ (22.71)