Investments (Amortized Cost and Aggregate Fair Value of Debt Securities, by Contractual Maturity) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Investments [Abstract]
Available-for-sale Securities, Due in one year or less, Amortized Cost	$ 1,239
Available-for-sale Securities, Due in one year or less, Fair Value	1,258
Available-for-sale Securities, Due after one year through five years, Amortized Cost	14,704
Available-for-sale Securities, Due after one year through five years, Fair Value	15,821
Available-for-sale Securities, Due after five years through ten years, Amortized Cost	27,526
Available-for-sale Securities, Due after five years through ten years, Fair Value	27,671
Available-for-sale Securities, Due after ten years, Amortized Cost	35,605
Available-for-sale Securities, Due after ten years, Fair Value	34,684
Available-for-sale securities, Amortized Cost	79,074	71,678
Available-for-sale Securities, Fair Value	79,434
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	249
Held-to-maturity Securities, Due after one year through five years, Fair Value	263
Held-to-maturity Securities, Due after five years through ten years, Amortized Cost	180
Held-to-maturity Securities, Due after five years through ten years, Fair Value	193
Held-to-maturity Securities, Due after ten years, Amortized Cost	383
Held-to-maturity Securities, Due after ten years, Fair Value	397
Held-to-maturity Securities, Amortized Cost	812	1,502
Held-to-maturity Securities, Fair Value	$ 853	$ 1,609