Investments (Held-to-Maturity Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 2,439	$ 3,108
Held-to-maturity securities, unrealized gains	65	74
Held-to-maturity securities, unrealized losses	0	0
Fair Value	2,504	3,182
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	2,395	2,818
Held-to-maturity securities, unrealized gains	62	69
Held-to-maturity securities, unrealized losses	0	0
Fair Value	2,457	2,887
US Treasury Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	44	290
Held-to-maturity securities, unrealized gains	3	5
Held-to-maturity securities, unrealized losses	0	0
Fair Value	$ 47	$ 295