Quarterly report pursuant to Section 13 or 15(d)

Leases (Cost) (Details)

v3.19.2
Leases (Cost) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2019
Leases [Abstract]    
Operating lease cost $ 9,591 $ 19,156
Short-term lease cost $ 1,849 $ 3,347