Long-Term Debt - Notes Payable Landwell - Additional Information (Detail) (Landwell, Note payable to the City of Henderson, USD $)	12 Months Ended
	Dec. 31, 2013	May 31, 2012
Landwell | Note payable to the City of Henderson
Debt Instrument [Line Items]
Debt instrument	$ 3,100,000	$ 3,900,000
Periodic principal payments	$ 250,000
Interest rate terms	The loan bears interest at a 3% fixed rate.
Promissory note maturity date	Dec. 31, 2020
Frequency of debt instrument payment	Semi-Annual
Fixed interest rate percentage	3.00%