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Leases - Lease Cost Finance And Operating Leases (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2019
USD ($)
Operating Lease, Cost $ 4,987 [1]
Finance lease cost  
Amortization of leased assets 1,478 [2]
Interest on capital lease obligations 94
Total lease costs $ 6,559
[1] Includes variable lease costs of $0.5 million and short-term lease costs of $0.2 million.
[2] Includes variable lease costs of $0.3 million.