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) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Leases [Abstract]        
Operating lease cost $ 4,490 $ 4,335 $ 8,880 $ 8,525
Short-term lease cost 449   1,243 451
Short-term lease (benefit)   (581)    
Variable lease cost 1,627 2,138 3,061 4,064
Total lease expense 6,566 5,892 13,184 13,040
Lease costs capitalized   178   3,459
Total lease costs $ 6,566 $ 6,070 13,184 16,499
Operating cash flows attributable to operating leases     $ 11,863 $ 13,966
Weighted-average remaining lease term 1 year 3 months 2 years 2 months 12 days 1 year 3 months 2 years 2 months 12 days
Weighted-average discount rate 6.09% 6.13% 6.09% 6.13%