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Revenue and Related Contract Costs and Contract Liabilities - Summary of Changes in Contract Costs (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2020
USD ($)
Revenue From Contract With Customer [Abstract]  
Balance at December 31, 2019 $ 28,496
Additions 11,672
Expenses (17,679)
Cancelled (2,086)
Foreign exchange translation adjustment (644)
Balance at March 31, 2020 $ 19,759