CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - Cash and Restricted Cash (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2021		Dec. 31, 2020	Sep. 30, 2020		Dec. 31, 2019
Cash and cash equivalents	$ 794,739		$ 74,417	$ 82,241
Restricted cash	16,698	[1]	16,432	16,134	[1]
Total cash and cash equivalents and restricted cash shown in our condensed consolidated statements of cash flows	$ 811,437		$ 90,849	$ 98,375		$ 52,224
Life Science Property | Joint Venture
Ownership percentage	55.00%

[1] Restricted cash consists of amounts escrowed for real estate taxes, insurance and capital expenditures at certain of our mortgaged properties and cash held for the operations of the life science property that is owned in a joint venture arrangement in which we own a 55% equity interest.