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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2019
Mar. 31, 2019
Jun. 30, 2020
Jun. 30, 2019
CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY            
Mark to market of foreign exchange hedges, tax expense (benefit) $ 2 $ (2) $ 7 $ (6) $ 0 $ 1