Fair Value Measurements - Financial Assets and Liabilities Not Measured at Fair Value (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Carrying Amount
Assets:
Cash equivalents	$ 229,922	$ 427,601
Liabilities:
Mortgages payable (excluding deferred debt issuance costs, net)	1,096,544	1,096,544
Fair Value | Level 1
Assets:
Cash equivalents	229,922	427,601
Fair Value | Level 2
Liabilities:
Mortgages payable (excluding deferred debt issuance costs, net)	$ 1,056,734	$ 1,064,122