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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2017
Additional information [Abstract] |
Future Minimum Commitments For Capital And Operating Leases | As of December 31, 2017, under current operating and capital lease contracts, we had future minimum lease payments as follows:
(In thousands) |  | Capital |  | Operating
2018 |  | $ | 2,649 |  |  | $ | 12,074 |
2019 |  | 2,697 |  |  | 9,692 |
2020 |  | 2,662 |  |  | 8,808 |
2021 |  | 2,710 |  |  | 7,764 |
2022 |  | 2,643 |  |  | 7,416 |
Thereafter |  | 24,179 |  |  | 29,586 |
Total future minimum lease payments |  | $ | 37,540 |  |  | $ | 75,340 |
Less interest portion |  | (15,442 | ) |  |
Present value of future minimum lease payments |  | $ | 22,098 |  |  |

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