Schedule Of Other Assets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Schedule of Other Assets [Line Items]
Debt issuance costs, less accumulated amortization of $4,987 and $13,779, respectively	$ 11,568	$ 10,115
Notes receivable, net	4,175	3,922
Cash equivalents and cash surrender value of life insurance held in Rabbi trust	12,559	8,801
Deposits	2,013	1,791
Other	417	418
Other assets, total	$ 30,732	$ 25,047