Other Assets (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Other Assets [Line Items]
Other assets	$ 22,816	$ 22,050
Cash in escrow
Other Assets [Line Items]
Other assets	1,204	748
Accounts receivable
Other Assets [Line Items]
Other assets	3,795	5,061
Income tax receivable
Other Assets [Line Items]
Other assets	222	69
Prepaid expenses
Other Assets [Line Items]
Other assets	4,016	3,106
Inventory
Other Assets [Line Items]
Other assets	1,089	877
Retained interest in entities
Other Assets [Line Items]
Other assets	10,928	10,707
Intangible assets
Other Assets [Line Items]
Other assets	218	310
Other assets
Other Assets [Line Items]
Other assets	$ 1,344	$ 1,172