Loans and the Allowance for Loan Losses (Details) - Composition of Loan Portfolio (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 2,427,235	$ 960,604
Net deferred loan (fees) costs	(470)	339
Loans receivable	2,426,765	960,943
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	470,510	229,688
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,570,854	536,539
Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	141,844	42,722
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	241,387	150,571
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 2,640	$ 1,084