Noncovered Loans (Narrative) (Details) (USD $)	9 Months Ended					3 Months Ended		9 Months Ended
	Sep. 30, 2014 contract	Sep. 30, 2013	Dec. 31, 2013	Sep. 30, 2014 Loans Receivable [Member]	Dec. 31, 2013 Loans Receivable [Member]	Sep. 30, 2014 Covered Loans [Member]	Sep. 30, 2013 Covered Loans [Member]	Sep. 30, 2014 Covered Loans [Member]	Sep. 30, 2013 Covered Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Provision for loan and lease losses	$ 5,019,000	$ 3,581,000				$ (520,000)	$ (947,000)	$ 3,419,000	$ (1,679,000)
Loans to related parties	12,100,000		14,200,000
Loans and Leases Receivable, Related Parties, Additions	1,700,000
Repayments on related party loans	3,800,000
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged				1,040,000,000	1,080,000,000
Federal Reserve Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged				38,300,000	45,200,000
Additional funds committed to lend on loans classified as TDR	$ 92,000		$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0