Segments - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information
General contracting and real estate services revenues	$ 35,563	$ 47,268
General contracting and real estate services \| General contracting and real estate services
Segment Reporting Information
General contracting and real estate services revenues	35,563	47,268
General contracting and real estate services expenses	34,275	45,550
General contracting and real estate services \| General contracting and real estate services \| Intercompany Eliminations
Segment Reporting Information
General contracting and real estate services revenues	2,000	13,100
General contracting and real estate services expenses	$ 2,000	$ 13,000

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details