Loans and the Allowance for Loan Losses (Details) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Loans and the Allowance for Loan Losses (Details) [Line Items]
Non Accrual Contractual Due	90 days
Number of Loans and Leases Receivable Types	2
Number of Classes of Loans and Leases	5
Duration for Payments Received to Demonstrate Loan Terms	9 months
Number of Credit Losses Components	2
Loans Pledged as Collateral	$ 987,500,000	$ 564,700,000
Financing Receivable, Collectively Evaluated for Impairment	2,407,992,000	942,679,000
Commitments to Lend Additional Funds	0
Financing Receivable, Modifications, Recorded Investment	2,800,000	6,600,000
Loans Modified In Troubled Debt Restructuring On Non Accrual Status	1,000,000	826,000
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	333,000	0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0
Financing Receivable, Modifications, Number of Contracts	4	0
Loans on Which Concessions Were Made	2,000,000
Loans on Which Two or More Concessions Were Made	1,300,000
Acquired Loans [Member]
Loans and the Allowance for Loan Losses (Details) [Line Items]
Financing Receivable, Collectively Evaluated for Impairment	$ 1,275,000,000	$ 34,000,000