Quarterly report pursuant to Section 13 or 15(d)

Leases (Components of Lease Costs) (Details)

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Leases (Components of Lease Costs) (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
USD ($)
Sep. 30, 2019
USD ($)
Leases [Abstract]    
Operating lease cost $ 4,820 $ 12,154
Short-term lease cost 166 570
Variable lease cost 1,652 4,390
Total lease expense 6,638 17,114
Capital expenditures 99 99
Total lease cost $ 6,737 17,213
Operating cash flows from (to) operating leases   $ 13,364
Weighted-average remaining lease term 2 years 6 months 2 years 6 months
Weighted-average discount rate 6.16% 6.16%