Annual report pursuant to Section 13 and 15(d)

Revenue - Summary of Contract Assets and Liabilities (Details)

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Revenue - Summary of Contract Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Jan. 01, 2019
Revenue from Contract with Customer [Abstract]    
Contract Assets $ 19,567 $ 33,030
Contract Liabilities $ 38,758 $ 27,347