Investments in Real Estate - Schedule of Land Held for Development (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) a	Dec. 31, 2021 USD ($)
Real Estate [Line Items]
Land held for development	$ 104,347	$ 104,160
Real Estate Investment
Real Estate [Line Items]
Approx. Developable Acres | a	490
Land held for development	$ 104,347
LXP Amount Funded	$ 99,156
Reems & Olive | Phoenix, AZ | Real Estate Investment
Real Estate [Line Items]
Project (% owned)	95.50%
Approx. Developable Acres | a	420
Land held for development	$ 101,047
LXP Amount Funded	$ 96,544
Mt. Comfort Phase II | Indianapolis, IN | Real Estate Investment
Real Estate [Line Items]
Project (% owned)	80.00%
Approx. Developable Acres | a	70
Land held for development	$ 3,300
LXP Amount Funded	$ 2,612