Investments (Amortized Cost And Fair Value Of Debt Securities, By Contractual Maturity) (Details) $ in Thousands	Sep. 30, 2017 USD ($)
Investments [Abstract]
Due in one year or less, Amortized cost	$ 951
Due after one year through five years, Amortized cost	14,110
Due after five years through ten years, Amortized cost	33,407
Due after ten years, Amortized cost	29,066
Amortized Cost Contractual Maturities Subtotal	77,534
Mortgage-backed securities, Amortized cost	53,723
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis	131,257
Due in one year or less, Fair value	953
Due after one year through five years, Fair value	14,354
Due after five years through ten years, Fair value	33,683
Due after ten years, Fair value	29,229
Fair Value Contractual Maturities Subtotal	78,219
Mortgage-backed securities, Fair value	53,756
Available-for-sale Securities, Debt Securities, Fair Value	$ 131,975