Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.3
Revenue from Contracts with Customers - Contract Assets and Liabilities (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Contract with Customer, Asset and Liability [Abstract]    
Contract assets $ 0 $ 0
Contract liabilities 9,000 $ 0
Deferred revenue 7,965  
Revenue recognized $ (1,035)