Reporting Segments and Related Information - Revenue Components of Real Estate Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue from External Customer [Line Items]
Equity in earnings of unconsolidated joint ventures	$ 9,202	$ 4,504	$ 16,575
Commercial expenses	55,873	44,577	50,954
Operating Segments
Revenue from External Customer [Line Items]
Commercial revenues	55,613	37,830	49,523
Real estate - commercial/industrial | Operating Segments
Revenue from External Customer [Line Items]
Commercial revenues	19,476	9,536	16,792
Equity in earnings of unconsolidated joint ventures	9,202	4,504	16,575
Commercial revenues and equity in earnings of unconsolidated joint ventures	28,678	14,040	33,367
Commercial expenses	11,953	7,122	12,961
Operating results from commercial and unconsolidated joint ventures	$ 16,725	$ 6,918	$ 20,406