Investments (Amortized Cost and Aggregate Fair Value of Debt Securities, by Contractual Maturity) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Investments [Abstract]
Available-for-sale Securities, Due in one year or less, Amortized Cost	$ 1,379
Available-for-sale Securities, Due in one year or less, Fair Value	1,421
Available-for-sale Securities, Due after one year through five years, Amortized Cost	16,015
Available-for-sale Securities, Due after one year through five years, Fair Value	17,320
Available-for-sale Securities, Due after five years through ten years, Amortized Cost	29,227
Available-for-sale Securities, Due after five years through ten years, Fair Value	30,207
Available-for-sale Securities, Due after ten years, Amortized Cost	35,363
Available-for-sale Securities, Due after ten years, Fair Value	36,144
Available-for-sale securities, Amortized Cost	81,984	79,074
Available-for-sale Securities, Fair Value	85,092
Held-to-maturity Securities, Due in one year or less, Amortized Cost	0
Held-to-maturity Securities, Due in one year or less, Fair Value	0
Held-to-maturity Securities, Due after one year through five years, Amortized Cost	201
Held-to-maturity Securities, Due after one year through five years, Fair Value	212
Held-to-maturity Securities, Due after five years through ten years, Amortized Cost	154
Held-to-maturity Securities, Due after five years through ten years, Fair Value	167
Held-to-maturity Securities, Due after ten years, Amortized Cost	373
Held-to-maturity Securities, Due after ten years, Fair Value	404
Held-to-maturity Securities, Amortized Cost	728	812
Held-to-maturity Securities, Fair Value	$ 783	$ 853