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Restricted Cash (Tables)	9 Months Ended
Restricted Cash (Tables)	Sep. 30, 2020
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents [Abstract]
Schedule Of Cash And Cash Equivalents [Table Text Block]	September 30, December 31, 2020 2019 2019 2018 Cash and cash equivalents $ 155,750 $ 128,161 $ 123,524 $ 104,147 Restricted cash included in other current assets 82 460 353 — Restricted cash included in other assets 18,901 19,839 19,678 20,278 Cash, cash equivalents and restricted cash $ 174,733 $ 148,460 $ 143,555 $ 124,425