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Leases (Schedule of Maturity of Lease Liabilities) (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Operating Leases |  |  |
July 1, 2019 to June 30, 2020 |  | $ 59,252 |
July 1, 2020 to June 30, 2021 |  | 49,297 |
July 1, 2021 to June 30, 2022 |  | 40,248 |
July 1, 2022 to June 30, 2023 |  | 33,200 |
July 1, 2023 to June 30, 2024 |  | 25,094 |
Thereafter |  | 76,390 |
Total minimum lease payments |  | 283,481 |
Less: Amount of lease payments representing interest |  | (38,362) |
Present value of future minimum lease payments |  | 245,119 |
Current portion of lease liabilities |  | 49,970 | $ 0
Noncurrent portion of lease liabilities |  | 195,149 | 0
Finance Leases |  |  |
July 1, 2019 to June 30, 2020 |  | 4,709 |
July 1, 2020 to June 30, 2021 |  | 3,015 |
July 1, 2021 to June 30, 2022 |  | 1,912 |
July 1, 2022 to June 30, 2023 |  | 898 |
July 1, 2023 to June 30, 2024 |  | 243 |
Thereafter |  | 157 |
Total minimum lease payments |  | 10,934 |
Less: Amount of lease payments representing interest |  | (658) |
Present value of future minimum lease payments | [1] | 10,276 | $ 4,213
Current portion of lease liabilities |  | 4,379 |
Noncurrent portion of lease liabilities |  | $ 5,897 |
[1] | See Note 14 - Leases for further disclosure regarding finance lease obligations.

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