Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Unrecognized Tax Assets (Details)

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Income Taxes - Schedule of Unrecognized Tax Assets (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Balance $ (13,189) $ (9,650) $ (6,153)
Addition for tax positions of prior years (1,416) (1,396) (293)
Reduction for tax positions of prior years 104 275 300
Addition for tax position of the current year (1,522) (2,418) (3,504)
Additions related to acquisitions (523)    
Balance $ (16,546) $ (13,189) $ (9,650)