Investments (Amortized Cost And Fair Value Of Debt Securities, By Contractual Maturity) (Details) $ in Thousands	Mar. 31, 2017 USD ($)
Investments [Abstract]
Due in one year or less, Amortized cost	$ 1,562
Due after one year through five years, Amortized cost	11,375
Due after five years through ten years, Amortized cost	31,555
Due after ten years, Amortized cost	33,842
Amortized Cost Contractual Maturities Subtotal	78,334
Mortgage-backed securities, Amortized cost	58,252
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis	136,586
Due in one year or less, Fair value	1,563
Due after one year through five years, Fair value	11,543
Due after five years through ten years, Fair value	31,754
Due after ten years, Fair value	33,760
Fair Value Contractual Maturities Subtotal	78,620
Mortgage-backed securities, Fair value	58,236
Available-for-sale Securities, Debt Securities, Fair Value	$ 136,856