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Leases (Summary of Amounts Recognized in Condensed Consolidated Balance Sheet) (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018 | Sep. 30, 2018
--- | --- | --- | ---
Assets |  |  |  |
Operating lease assets |  | $ 70,773 | $ 0 | $ 0
Finance lease assets |  | 24,003 |  |
Total leased assets |  | 111,912 |  |
Liabilities |  |  |  |
Current operating leases |  | 24,544 |  |
Non-current operating leases |  | 47,299 | 0 | 0
Total operating lease liabilities |  | 71,843 |  |
Current finance leases | [1] | 17,331 | 0 | 0
Non-current finance leases | [1] | 21,925 | $ 0 | $ 0
Total finance lease liabilities |  | 39,256 |  |
Total lease liabilities |  | 111,099 |  |
Rail |  |  |  |
Assets |  |  |  |
Finance lease assets |  | $ 17,136 |  |
[1] | See Note 14, Leases, for additional information. September 30, 2019 balances include the former build-to-suit lease that was reclassed from other current liabilities and other long-term liabilities as a result of the adoption of ASC 842.

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