Investments (Held-to-Maturity Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 2,072	$ 2,439
Held-to-maturity securities, unrealized gains	103	65
Held-to-maturity securities, unrealized losses	0	0
Fair Value	2,175	2,504
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	2,042	2,395
Held-to-maturity securities, unrealized gains	100	62
Held-to-maturity securities, unrealized losses	0	0
Fair Value	2,142	2,457
US Treasury Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	30	44
Held-to-maturity securities, unrealized gains	3	3
Held-to-maturity securities, unrealized losses	0	0
Fair Value	$ 33	$ 47