Acquisitions Acquisitions (Details Textuals) (USD $)						0 Months Ended	3 Months Ended		3 Months Ended
	Sep. 30, 2014	Apr. 07, 2014	Dec. 31, 2013	Sep. 30, 2013	May 31, 2013 bank_branch	Apr. 07, 2014 Capitalsource, Inc. [Member] bank_branch	Sep. 30, 2014 Capitalsource, Inc. [Member]	May 31, 2013 First California Financial Group, Inc. [Domain] bank_branch	Jun. 30, 2014 Shares Of Common Stock [Member] Capitalsource, Inc. [Member]
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition						Apr. 07, 2014
Common Stock, Par or Stated Value Per Share	$ 0.01		$ 0.01			$ 45.83
Business Acquisition, Share Price						$ 2.47
Business Acquisition Shares Receivable By Stockholders Of Acquiree Ratio						0.2837
Stock Issued During Period, Shares, New Issues									56,601,997
Common Stock, Value, Outstanding						$ 3,100,000,000
Business Integration Completion Date						April 12, 2014
Number of Branches						21		15
Number Of Operating Branches Closed As Part Of Integration And Consolidation Plan						12
Number Of Operating Branches Which Overlapped With Existing Branches						1
Goodwill	1,722,129,000	1,520,031,000	208,743,000	215,862,000	129,070,000
Number Of Locations Added To Branch Network As Result Of Integration And Consolidation Plan					7
Pro forma revenues (net interest income plus noninterest income)							259,000,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual							$ 94,400,000