Accrued Expenses And Other Liabilities (Schedule Of Accrued Expenses And Other Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Accrued Expenses And Other Liabilities [Abstract]
Accrued bonuses	$ 47,585	$ 43,896
Accrued compensation and benefits	16,818	16,040
Accrued rent and vendor expenses	11,554	10,445
Reserve for policy cancellations	6,396	5,559
Accrued interest	3,288	4,727
Other	15,224	14,280
Total	$ 100,865	$ 94,947