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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2017
Commitments And Contingencies Disclosure [Abstract] |
Future Minimum Lease Payments | The Company’s operating leases cover primarily buildings and underlying real estate, software subscriptions, office equipment and automobiles. We do not have lease arrangements with related parties. A summary of lease and construction commitments as of December 31, 2017, under all non-cancelable operating leases with terms exceeding one year is as follows:
2018 |  | $ | 10,630 |
2019 |  |  | 6,966 |
2020 |  |  | 3,629 |
2021 |  |  | 2,106 |
2022 |  |  | 1,916 |
2023 or later |  |  | 3,811 |
Total |  | $ | 29,058 |

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