Reserve For Losses, LAE And Future Policy Benefit Reserve (Summary Of Activity In The Reserve For Future Policy Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Reserve For Losses, LAE And Future Policy Benefit Reserve [Abstract]
Balance at beginning of year	$ 63,002	$ 64,536	$ 66,172
Liabilities assumed	176	172	324
Adjustments to reserves	8,449	2,944	8,835
Benefits paid in the current year	(4,440)	(4,650)	(10,795)
Balance at end of year	$ 67,187	$ 63,002	$ 64,536