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Long-Term Debt - Notes Payable Landwell - Additional Information (Detail) - LandWell - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2016
Western Alliance Business Trust
Debt Instrument [Line Items]
Interest rate terms	. The agreement requires semi-annual payments of principal and interest on April 15 and October 15 aggregating $1.3 million annually beginning on April 15, 2020 through the maturity date in April 2036 and is payable from the tax increment reimbursement funds received under the OPA.
Frequency of debt instrument payment	semi-annual
Long-term promissory note fixed interest rate	4.76%
Principal amount of loan agreement		$ 15,000,000
Periodic principal and interest payments	$ 1,300,000
Loans maturity period	2036-04
Note payable to the City of Henderson
Debt Instrument [Line Items]
Debt instrument		$ 3,900,000
Periodic principal payments	$ 250,000
Interest rate terms	The loan bears interest at a 3% fixed rate.
Frequency of debt instrument payment	semi-annual
Long-term promissory note fixed interest rate	3.00%
Payment of notes payable using receipts from specified revenues sources	$ 400,000

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