Condensed Combined Balance Sheets for LLCs Accounted Under Equity Method (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Equity Method Investments And Joint Ventures [Abstract]
Net property, including construction in progress	$ 31,432	$ 31,818
Other assets	6,951	3,251
Total assets	38,383	35,069
Other liabilities	6,005	2,717
Mortgage notes payable, non-recourse to us	27,103	27,256
Equity	5,275	5,096
Total liabilities and equity	38,383	35,069
Investments in LLCs before amounts included in accrued expenses and other liabilities	4,944	5,019
Amounts included in accrued expenses and other liabilities	(1,933)	(2,258)
Our share of equity in LLCs, net	$ 3,011	$ 2,761