Annual report pursuant to Section 13 and 15(d)

Revenue From Contracts With Customers (Details)

v3.10.0.1
Revenue From Contracts With Customers (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Revenue from Contract with Customer [Abstract]    
Receivables from customers $ 210,200 $ 146,773