Investments (Held-to-Maturity Securities) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 878	$ 1,502
Held-to-maturity securities, unrealized gains	53	107
Held-to-maturity securities, unrealized losses	0	0
Fair Value	931	1,609
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	764	1,194
Held-to-maturity securities, unrealized gains	47	91
Held-to-maturity securities, unrealized losses	0	0
Fair Value	811	1,285
US States and Political Subdivisions Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	0	145
Held-to-maturity securities, unrealized gains	0	2
Held-to-maturity securities, unrealized losses	0	0
Fair Value	0	147
US Treasury Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	114	163
Held-to-maturity securities, unrealized gains	6	14
Held-to-maturity securities, unrealized losses	0	0
Fair Value	$ 120	$ 177