Fair Value Measurements Fair Value Measurements (Details 4) (USD $) In Thousands, unless otherwise specified									3 Months Ended	9 Months Ended				3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Level 1	Dec. 31, 2013 Level 1	Sep. 30, 2014 Level 2	Dec. 31, 2013 Level 2	Sep. 30, 2014 Level 3	Dec. 31, 2013 Level 3	Sep. 30, 2014 Fair Value, Measurements, Nonrecurring [Member]	Sep. 30, 2014 Fair Value, Measurements, Nonrecurring [Member]	Sep. 30, 2014 Fair Value, Measurements, Nonrecurring [Member] Level 1	Sep. 30, 2014 Fair Value, Measurements, Nonrecurring [Member] Level 2	Sep. 30, 2014 Fair Value, Measurements, Nonrecurring [Member] Level 3	Sep. 30, 2014 Non Purchased Credit Impaired Loans and Leases [Member] Fair Value, Measurements, Nonrecurring [Member]	Sep. 30, 2014 Non Purchased Credit Impaired Loans and Leases [Member] Fair Value, Measurements, Nonrecurring [Member]	Sep. 30, 2014 Non Purchased Credit Impaired Loans and Leases [Member] Fair Value, Measurements, Nonrecurring [Member] Level 3	Sep. 30, 2014 Other real estate and foreclosed assets [Member] Fair Value, Measurements, Nonrecurring [Member]	Sep. 30, 2014 Other real estate and foreclosed assets [Member] Fair Value, Measurements, Nonrecurring [Member]	Sep. 30, 2014 Other real estate and foreclosed assets [Member] Fair Value, Measurements, Nonrecurring [Member] Level 1	Sep. 30, 2014 Other real estate and foreclosed assets [Member] Fair Value, Measurements, Nonrecurring [Member] Level 2	Sep. 30, 2014 Third party appraisals [Domain] Non Purchased Credit Impaired Loans and Leases [Member] Fair Value, Measurements, Nonrecurring [Member] Level 3	Sep. 30, 2014 Third party appraisals [Domain] Other real estate and foreclosed assets [Member] Fair Value, Measurements, Nonrecurring [Member] Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring									$ 70,739	$ 70,739	$ 0	$ 28,718	$ 42,021	$ 42,728	$ 42,728	$ 40,362	$ 28,011	$ 28,011	$ 0	$ 26,352	$ 4,056	$ 1,659
Loans Receivable, Fair Value Disclosure	11,396,792	4,231,078	0	0	2,366	2,051	11,394,426	4,229,027
Total Net Gain (Loss) from Nonrecurring Assets									$ (6,237)	$ (15,068)				$ (1,374)	$ (10,205)		$ (4,863)	$ (4,863)