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Consolidated Statements of Cash Flows Consolidated Statements of Cash Flows (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2013
Income taxes refunded $ 32,318 $ 2,074 $ 47,837 $ 41,800