Allowance for Loan and Lease Loss and Credit Quality (Loans Sold) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Non Covered Loans Sold [Line Items]
Total	$ 72,847	$ 22,272
Non-owner Occupied Term [Member]
Non Covered Loans Sold [Line Items]
Total	0	3,193
Owner Occupied Term [Member]
Non Covered Loans Sold [Line Items]
Total	3,319	2,147
Multifamily [Member]
Non Covered Loans Sold [Line Items]
Total	435	0
Residential Development [Member]
Non Covered Loans Sold [Line Items]
Total	0	605
Term [Member]
Non Covered Loans Sold [Line Items]
Total	2,340	15,996
Mortgage [Member]
Non Covered Loans Sold [Line Items]
Total	$ 66,753	$ 331