Investment Securities (Investments Classified by Contractual Maturity Date) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Investment Securities [Abstract]
Held to Maturity, Due after one year through five years, Amortized Cost	$ 19,677
Held to Maturity, Due after five years through ten years, Amortized Cost	28,870
Held to Maturity, Due after ten years, Amortized Cost	19,282
Held to Maturity, Total investment securities, Amortized Cost	67,829	$ 59,454
Held to Maturity, Due after one year through five years, Estimated Fair Value	20,250
Held to Maturity, Due after five years through ten years, Estimated Fair Value	28,972
Held to Maturity, Due after ten years, Estimated Fair Value	19,209
Held-to-maturity, Total investment securities, Estimated Fair Value	68,431	60,099
Available for Sale, Due in one year or less, Amortized Cost	18,694
Available for Sale, Due after one year through five years, Amortized Cost	63,770
Available for Sale, Due after five years through ten years, Amortized Cost	41,423
Available for Sale, Due after ten years, Amortized Cost	29,672
Available for Sale, Total investment securities, Amortized Cost	153,559	172,867
Available for Sale, Due in one year or less, Estimated Fair Value	18,668
Available for Sale, Due after one year through five years, Estimated Fair Value	63,265
Available for Sale, Due after five years through ten years, Estimated Fair Value	41,195
Available for Sale, Due after ten years, Estimated Fair Value	29,251
Available for Sale, Total investment securities, Estimated Fair Value	$ 152,379	$ 172,202