Investments in Unconsolidated Entities - Summary of Properties Contributed In Unconsolidated Entities (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2022 USD ($)
Mark 302 JV [Member]
Related Party Transaction [Line Items]
Contribution Date	Mar. 20, 2018	[1]
Contribution Value	$ 60.0	[1]
Gain (Loss)	$ 8.8	[1]
Cockeysville JV [Member]
Related Party Transaction [Line Items]
Contribution Date	Mar. 29, 2019	[2]
Contribution Value	$ 14.6	[2]
Gain (Loss)	$ 5.9	[2]
Tech Ridge JV [Member]
Related Party Transaction [Line Items]
Contribution Date	Sep. 27, 2019	[3]
Contribution Value	$ 3.0	[3]
Gain (Loss)	$ 0.1	[3]

[1] The Mark 302 JV was subject to a revaluation which resulted in the Company adjusting the Contribution Value down to $60.0 million and reduced the Gain (Loss) by $30.0 million. As of September 30, 2021, the amended determination date, there has been no change to the adjusted Contribution Value and the final Contribution Value is $60.0 million.

[2] The Cockeysville JV is subject to revaluation upon our partner contributing an adjacent parcel of land (the “Additional Land Parcel”) to the joint venture which was conditioned on certain milestones being met with respect to entitling the Additional Land Parcel for residential use. As of December 31, 2021, the parcel has been entitled and, with our consent, the partner entered a sales contract with a third party for the land. As a result, the Company received its share of the proceeds from the sale in lieu of the parcel being contributed to the venture and recorded an additional gain of $2.1 million during the year ended December 31, 2021. The Company has determined that the final contribution value is $14.6 million.

[3] The Tech Ridge JV is subject to a revaluation primarily based upon the number of residential units constructed by the Tech Ridge JV. The Contribution Value cannot be less than $2.75 million.