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Fair Value Measurements - Summary of Changes in the Fair Value of the Contingent Consideration Liability (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Fair value adjustment of contingent consideration $ 0 $ 157  
NLEX [Member] | Contingent Consideration [Member]      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Beginning balance     $ 2,774
Payment of contingent consideration     (2,617)
Fair value adjustment of contingent consideration     $ (157)