Reinsurance (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reinsurance [Abstract]
Limit for reinsuring risk	$ 500,000		$ 250,000
Total life insurance in force	21,600,000,000	20,900,000,000
Total life insurance ceded to reinsurance companies	5,400,000,000	5,600,000,000
Reinsurance receivable	9,000,000	10,600,000
Reinsurance premiums	19,784,000	20,653,000	21,878,000
Reinsurance recoveries	$ 8,200,000	$ 7,000,000	$ 24,400,000