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Restricted Cash (Tables)	9 Months Ended
Restricted Cash (Tables)	Sep. 30, 2021
Restricted Cash Abstract]
Schedule Of Cash And Cash Equivalents [Table Text Block]	September 30, December 31, 2021 2020 2020 2019 Cash and cash equivalents $ 141,393 $ 155,750 $ 181,833 $ 123,524 Restricted cash included in other current assets — 82 62 353 Restricted cash included in other assets — 18,901 — 19,678 Cash, cash equivalents and restricted cash $ 141,393 $ 174,733 $ 181,895 $ 143,555