Other Assets (Schedule Of Other Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Other Assets [Abstract]
Debt issuance costs, less accumulated amortization of $13,779 and $10,859, respectively	$ 10,115	$ 12,988
Debt issuance costs, accumulated amortization	13,779	10,859
Notes receivable, net	3,922	4,236
Cash surrender value of life insurance	8,801	6,907
Deposits	1,794	1,548
Other intangible assets	418	413
Other assets, total	$ 25,050	$ 26,092