Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Non-Voting Shares Conversion Inc (Dec)	Non-Voting Shares Conversion (Decrease)	Voting Common Stock	Class B Non-Voting	Non-Voting Common Stock Equivalents	Non-Voting Common Stock Equivalents Capital Raise	Nonvoting Common Stock	Preferred Stock	Common Stock Non-Voting Shares Conversion Inc (Dec)	Common Stock Voting Common Stock	Common Stock Voting Common Stock Capital Raise	Common Stock Voting Common Stock Equity Option	Common Stock Voting Common Stock Restricted Stock-Based Compensation	Common Stock Voting Common Stock Restricted Stock-Based Compensation Surrendered	Common Stock Voting Common Stock Pacific Western Bank	Common Stock Class B Non-Voting	Common Stock Class B Non-Voting Pacific Western Bank	Additional Paid-in Capital
Preferred Stock, Shares Outstanding									513,250
Common Stock, Shares, Outstanding				78,973,869
Shares Purchased under Dividend Reinvestment Plan											5,268
Stock Issued During Period, Value, Stock Options Exercised							10,829,990					21,690,334				(57,157,632)		(477,321)
Preferred Stock, Shares Outstanding									513,250
Common Stock, Shares, Outstanding				157,651,752													477,321
Common Stock, Shares, Issued, Acquisitions						10,829,990								55,422	230,773
Stock Purchased Under Dividend Reinvestment Plan											20,505
Conversion of Stock, Shares Issued		(1,039,390)								1,039,390
Stock Repurchased During Period, Value																			$ 308
Preferred Stock, Shares Issued	513,250
Preferred Stock, Shares Outstanding	513,250								513,250
Common Stock, Shares, Outstanding	158,346,529										158,557,735						477,321
Common Stock, Shares, Issued, Acquisitions	158,557,735				477,321	9,790,600		9,790,600						(54,555)	99,357
Stock Purchased Under Dividend Reinvestment Plan											18,445
Conversion of Stock, Shares Issued		1,144,594								(1,144,594)
Stock Repurchased During Period, Shares								(1,150,000)			(12,498,429)
Stock Issued During Period, Value, Stock Options Exercised													5,616
Conversion of Stock, Description			(4,768,130)							4,768,130
Conversion of Voting Common Stock to Non-Voting Common Stock Equivalents				$ (11)		$ 11
Preferred Stock, Shares Issued	513,250
Preferred Stock, Shares Outstanding	513,250								513,250
Common Stock, Shares, Outstanding	149,963,520				477,321						150,039,018						477,321
Common Stock, Shares, Issued, Acquisitions	150,039,018				477,321	5,017,064		5,017,064						586,395	254,280