Fair Value of Assets and Liabilities (Narrative) (Details) (USD $)	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Total commercial mortgage and other loans, net of valuation allowance	$ 404,203,000	$ 426,981,000
Other Long-Term Investments	59,023,000	175,661,000
Other liabilities	91,982,000	108,737,000
Embedded Derivative Fair Value of Embedded Derivative	1,304,000,000	1,793,000,000
Fair Value of Level 3 Derivatives	0	739,000
Fair Value of Equity Securities that Transferred from Level 1 to 2	3,200,000
Fair Value Of Preferred Stocks That Transferred From Level 1 To 2	0		7,000,000
Separate Account assets transferred from Level 1 to Level 2	0
MarginDepositAssets	$ 300,000	$ 0