Quarterly report pursuant to Section 13 or 15(d)

Revenue - Summary of Contract Assets and Liabilities (Details)

v3.8.0.1
Revenue - Summary of Contract Assets and Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Jan. 01, 2018
Revenue from Contract with Customer [Abstract]    
Contract Assets $ 18,966 $ 24,423
Contract Liabilities $ 22,164 $ 11,431