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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parentheticals) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)        
Other comprehensive income (loss), Tax $ 0 $ 0 $ 0 $ 0