Fair Value Measurements (Fair Value of Assets Measured on Nonrecurring Basis) (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Impaired loans:
Impaired loans	$ 23,551	$ 26,187
Other real estate owned	2,197	4,252
Total assets measured at fair value on a nonrecurring basis	25,748	30,439
Fair Value, Inputs, Level 2 [Member]
Impaired loans:
Impaired loans	23,551	26,187
Other real estate owned	2,197	4,252
Total assets measured at fair value on a nonrecurring basis	25,748	30,439
Residential Portfolio Segment [Member]
Impaired loans:
Impaired loans	7,749	7,511
Residential Portfolio Segment [Member] | Fair Value, Inputs, Level 2 [Member]
Impaired loans:
Impaired loans	7,749	7,511
Commercial Real Estate Portfolio Segment [Member]
Impaired loans:
Impaired loans	6,944	7,422
Commercial Real Estate Portfolio Segment [Member] | Fair Value, Inputs, Level 2 [Member]
Impaired loans:
Impaired loans	6,944	7,422
Commercial Portfolio Segment [Member]
Impaired loans:
Impaired loans	36	161
Commercial Portfolio Segment [Member] | Fair Value, Inputs, Level 2 [Member]
Impaired loans:
Impaired loans	36	161
Consumer Portfolio Segment [Member]
Impaired loans:
Impaired loans	99	114
Consumer Portfolio Segment [Member] | Fair Value, Inputs, Level 2 [Member]
Impaired loans:
Impaired loans	99	114
Construction Loans [Member] | Commercial and Residential Real Estate Portfolio Segment [Member]
Impaired loans:
Impaired loans	8,723	10,979
Construction Loans [Member] | Commercial and Residential Real Estate Portfolio Segment [Member] | Fair Value, Inputs, Level 2 [Member]
Impaired loans:
Impaired loans	$ 8,723	$ 10,979