Quarterly report pursuant to Section 13 or 15(d)

Revenue from Contracts with Customers Revenue from Contracts with Customers - Contract Assets and Contract Liabilities (Details)

v3.19.2
Revenue from Contracts with Customers Revenue from Contracts with Customers - Contract Assets and Contract Liabilities (Details) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2019
Mar. 31, 2019
Revenue from Contract with Customer [Abstract]    
Total activity $ (2,808)  
Contract liabilities $ (6,344) $ (6,814)