Investments in Unconsolidated Joint Ventures (Combined Financial Information Income Statement) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Equity method investment, summarized financial information, income statement [Abstract]
Revenues	$ 147,983	$ 142,641
Maintenance, taxes, utilities, promotion, and other operating expenses	54,362	47,875
Interest expense	35,185	32,498
Depreciation and amortization	31,260	32,971
Total operating costs	120,807	113,344
Nonoperating income, net	542	401
Income tax expense	(2,100)	(1,679)
Net income	25,618	28,019
Net income attributable to TRG	12,411	14,293
Realized intercompany profit, net of depreciation on TRG’s basis adjustments	(776)	866
Depreciation of TCO's additional basis	(351)	(487)
Equity in income of UJVs	11,284	14,672
Beneficial interest in UJVs’ operations:
Revenues less maintenance, taxes, utilities, promotion, and other operating expenses	44,393	49,417
Interest expense	(16,415)	(16,776)
Depreciation and amortization	(16,397)	(17,192)
Income tax expense	$ (297)	$ (777)