Acquisitions Acquisitions (Details Textuals) - USD ($) $ in Thousands		6 Months Ended
	Apr. 07, 2014	Jun. 30, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Effective acquisition date		Apr. 07, 2014
Goodwill		$ 1,728,380	$ 1,720,479
Capitalsource, Inc. [Member]
Business Acquisition [Line Items]
Effective acquisition date	Apr. 07, 2014
Goodwill	$ 1,526,282