Allowance for Noncovered Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision for loan and lease losses			$ 5,019	$ 3,581
Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of unallocated loan amount			5.00%
Noncovered Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision for loan and lease losses	$ 1,500	$ 4,260	$ 1,600	$ 5,260