Real Estate - Discontinued Operations Balance Sheet (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020
Discontinued Operation, Assets
Land	$ 306,507	$ 301,709
Income producing property	1,544,217	1,473,335
Net income producing property, at cost	1,850,724	1,775,044
Accumulated depreciation and amortization	(384,392)	(335,006)
Net income producing property	1,466,332	1,440,038
Development in progress and land held for development	30,254	36,494
Total real estate held for investment, net	1,496,586	1,476,532
Cash and cash equivalents	307,797	7,697	$ 3,814
Restricted cash	605	593	$ 615
Rents and other receivables	14,713	9,725
Prepaid expenses and other assets	33,109	29,587
Discontinued Operation, Liabilities
Accounts payable and other liabilities	38,864	44,067
Advance rents	1,747	2,461
Tenant security deposits	4,480	4,221
Liabilities related to properties sold or held for sale	$ 0	25,229
Held for sale
Discontinued Operation, Assets
Land		249,869
Income producing property		958,704
Net income producing property, at cost		1,208,573
Accumulated depreciation and amortization		(414,008)
Net income producing property		794,565
Development in progress and land held for development		1,122
Total real estate held for investment, net		795,687
Cash and cash equivalents		3
Restricted cash		10
Rents and other receivables		48,532
Prepaid expenses and other assets		41,452
Total assets		885,684
Discontinued Operation, Liabilities
Accounts payable and other liabilities		14,706
Advance rents		4,754
Tenant security deposits		5,769
Liabilities related to properties sold or held for sale		$ 25,229