Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Parenthetical)

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Statement of Comprehensive Income [Abstract]      
Unrealized gain(loss) on investments, net of tax of $ 0 $ 0 $ 0
Foreign currency translation adjustments, net of tax benefit (expense) of (136) 200 202
Unrealized gain(loss) on interest rate swap, net of tax of benefit (expense) of $ 341 $ (187) $ (257)