Commitments and Contingencies (Summary of Contractual and Notional Amounts of Financial Instruments) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Home Equity Line of Credit [Member]
Financial Instruments [Line Items]
Contractual amounts of financial instrument	$ 303,815,000	$ 276,671,000
Commercial And Commercial Real Estate [Member]
Financial Instruments [Line Items]
Contractual amounts of financial instrument	47,066,000	26,688,000
Mortgage Loan Commitments [Member]
Financial Instruments [Line Items]
Contractual amounts of financial instrument	10,975,000	6,408,000
Letter of Credit [Member]
Financial Instruments [Line Items]
Contractual amounts of financial instrument	3,103,000	1,789,000
Other Commitments [Member]
Financial Instruments [Line Items]
Contractual amounts of financial instrument	1,305,000	437,000
Customer loan swaps
Financial Instruments [Line Items]
Notional amount of derivative	58,234,000	15,702,000
Interest rate swaps
Financial Instruments [Line Items]
Notional amount of derivative	$ 43,000,000	$ 43,000,000