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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - Cash and Restricted Cash (Parenthetical) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Sep. 30, 2021
Dec. 31, 2020
Statement of Cash Flows [Abstract]        
Cash and cash equivalents $ 691,040 $ 634,848 $ 794,739  
Restricted cash 109,765 [1] 382,097 16,698 [1]  
Total cash and cash equivalents and restricted cash shown in our condensed consolidated statements of cash flows $ 800,805 $ 1,016,945 $ 811,437 $ 90,849
[1] As of September 30, 2022, restricted cash consists of proceeds from the sale of joint venture interests and proceeds from the sale of properties to joint ventures held as collateral pursuant to the agreement governing our revolving credit facility, or our credit agreement. We may use these funds to pay for approved expenditures in accordance with our credit agreement. Restricted cash also consists of amounts escrowed for real estate taxes, insurance and capital expenditures at certain of our mortgaged properties. Prior to the deconsolidation of the joint venture that owns a life science property located in Boston, Massachusetts, or the Seaport JV, restricted cash also consisted of cash held for the operations of this joint venture.