Notes Receivable - Components of Notes Receivable (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
Receivables [Abstract]
Loans receivable	$ 52,820	$ 72,218	$ 71,645	$ 60,378
Other notes	1,016	1,034
Tax Increment Financing Bonds ("TIF Bonds")	3,809	5,086
Notes receivable, net	$ 57,645	$ 78,338	$ 77,857