Fair Value (Summary of Assets Measured at Fair Value on Non Recurring Basis) (Details) - USD ($)		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financing Receivable, Individually Evaluated for Impairment		$ 13,590,000	$ 20,254,000	$ 15,235,000
non-financial assets measured at fair value on recurring basis		0
Impaired Loans Collateral Dependent [Member] | Fair Value, Measurements, Nonrecurring [Member]
Assets:
Assets, Fair Value Disclosure		3,696,000	500,000
Impaired Loans Collateral Dependent [Member] | Fair Value, Measurements, Nonrecurring [Member] | Company Determined Fair Value (Level 3) [Member]
Assets:
Assets, Fair Value Disclosure		3,696,000	500,000
Servicing Contracts [Member] | Fair Value, Measurements, Nonrecurring [Member]
Assets:
Assets, Fair Value Disclosure	[1]	0	1,090,000
Servicing Contracts [Member] | Fair Value, Measurements, Nonrecurring [Member] | Company Determined Fair Value (Level 3) [Member]
Assets:
Assets, Fair Value Disclosure	[1]		1,090,000
Other Real Estate Owned [Member] | Fair Value, Measurements, Nonrecurring [Member]
Assets:
Assets, Fair Value Disclosure		130,000	922,000
Other Real Estate Owned [Member] | Fair Value, Measurements, Nonrecurring [Member] | Company Determined Fair Value (Level 3) [Member]
Assets:
Assets, Fair Value Disclosure		130,000	922,000
Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financing Receivable, Individually Evaluated for Impairment		500,000	250,000
Consumer loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financing Receivable, Individually Evaluated for Impairment			7,000	74,000
Commercial loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financing Receivable, Individually Evaluated for Impairment		$ 1,791,000	$ 2,028,000	$ 3,937,000

[1] Represents mortgage serving assets deemed to be impaired and a valuation allowance was established to carry at fair value at December 31, 2017 and 2016.