Accounts and Other Receivables (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Accounts and Other Receivables [Line Items]
Insurance receivables	$ 117,129	$ 109,390
Escrow receivables	3,516	5,815
Notes receivable	3,928	3,566
Other receivables	5,739	4,937
Reserve	(2,824)	(3,019)
Total accounts and other receivables, net	$ 127,488	$ 120,689