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Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Cash, Cash Equivalents and Restricted Cash (Details)

v3.20.4
Summary of Significant Accounting Policies - Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Accounting Policies [Abstract] Ìý Ìý Ìý Ìý
Cash and cash equivalents $ 281,046 $ 303,645 Ìý Ìý
Tax like-kind exchange escrow 1,978 0 Ìý Ìý
Total cash, cash equivalents and restricted cash shown in the statement of cash flows $ 283,024 $ 303,645 $ 123,446 $ 79,580