Commitments and Contingent Liabilities - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($) lot	Dec. 31, 2017 USD ($)
Commitments And Contingencies [Line Items]
Rent expense under operating leases		$ 52,900	$ 49,400
Maximum range of deposits required under the purchase agreements	10.00%
Contingent forfeitable deposits with land developers	$ 211,500
Finished lots committed to purchase under specific performance obligations | lot		10
Purchase price of finished lots committed to purchase under specific performance obligations	0	$ 1,505
Aggregate additional funding commitments related to raw land property development	6,100
Expected development credit offset amount	2,800
Contingent obligations under bonds or letters of credit arrangements	40,600
Credit Agreement
Commitments And Contingencies [Line Items]
Contingent obligations under letters of credit arrangements	$ 9,700