Segments - Net Income of Reportable Segments (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information
Rental revenues	$ 219,294	$ 192,140	$ 166,488
Real estate taxes	22,057	21,852	18,136
Segment revenues	234,859	91,936	217,146
Gross profit	154,196	127,630	117,066
Office real estate
Segment Reporting Information
Rental revenues	74,036	47,363	43,494
Rental expenses	18,710	12,412	10,799
Real estate taxes	7,625	6,112	5,111
Gross profit	47,701	28,839	27,584
Retail real estate
Segment Reporting Information
Rental revenues	86,344	78,572	73,032
Rental expenses	13,769	12,512	11,029
Real estate taxes	8,873	8,416	7,784
Gross profit	63,702	57,644	54,219
Multifamily residential real estate
Segment Reporting Information
Rental revenues	58,914	66,205	49,962
Rental expenses	18,263	21,570	17,132
Real estate taxes	5,559	7,324	5,241
Gross profit	35,092	37,311	27,589
General contracting and real estate services
Segment Reporting Information
Segment revenues	234,859	91,936	217,146
Segment expenses	227,158	88,100	209,472
Gross profit	$ 7,701	$ 3,836	$ 7,674

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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