Investments (Amortized Cost And Fair Value Of Debt Securities, By Contractual Maturity) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Schedule of Investments [Line Items]
Due in one year or less	$ 5,291
Due after one year through five years	13,964
Due after five years through ten years	17,582
Due after ten years	38,278
Sub Total	75,115
Mortgage-backed securities	53,678
Amortized Cost	130,898	123,874
Due in one year or less	5,318
Due after one year through five years	14,741
Due after five years through ten years	18,425
Due after ten years	38,100
Sub Total	76,584
Mortgage-backed securities	54,297
Fair Value	132,804	125,301
Total Debt Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost	128,793
Fair Value	$ 130,881