Land Under Development - Additional Information (Detail) $ in Thousands	Jun. 30, 2020 USD ($) parcel lot
Real Estate [Abstract]
Number of raw parcels of land owned | parcel	5
Carrying value of raw parcels of land	$ 69,323
Number of finished lots expected to be developed from raw parcels of land | lot	600
Aggregate additional funding commitments related to raw land property under joint development	$ 5,200
Expected development credits that will offset the aggregate additional funding commitments related to raw land property development	$ 2,900