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Software Licenses (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Other Commitments [Line Items]    
Liabilities, Current $ 84,584 $ 74,823
Software licenses    
Other Commitments [Line Items]    
Liabilities, Current 1,700  
Liabilities, Noncurrent $ 1,900