Quarterly report pursuant to Section 13 or 15(d)

Leases (Details)

v3.19.2
Leases (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2019
Leases [Abstract]    
Operating lease expense $ 10,090 $ 18,449
Variable lease expense 1,778 4,483
Short-term lease expense 15,405 25,481
Finance lease cost:    
Amortization of right-to-use assets 586 830
Interest on lease liabilities 326 668
Operating lease revenue 81 246
Sublease income $ 404 $ 808