Segments - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Segment Reporting Information
Non-cash stock compensation	$ 689	$ 549
General and Administrative Expense
Segment Reporting Information
Non-cash stock compensation	500	500
General contracting and real estate services
Segment Reporting Information
Non-cash stock compensation	200	100
General contracting and real estate services
Segment Reporting Information
General contracting and real estate services revenues	17,036	23,050
General contracting and real estate services expenses	16,286	22,414
General contracting and real estate services \| General contracting and real estate services \| Intercompany Eliminations
Segment Reporting Information
General contracting and real estate services revenues	30,200	25,900
General contracting and real estate services expenses	$ 29,900	$ 25,600

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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-Name Accounting Standards Codification
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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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