Accounting Policies and Basis of Presentation Accounting Policies and Basis of Presentation (Recently Adopted Accounting Standards) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2012	Dec. 31, 2014
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Prior Period Reclassification Adjustment	$ 3,300
Qualified Affordable Housing Project Investments	$ 76,400		$ 57,100
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification		$ 2,400