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v3.20.2

Other Long-Term Liabilities (Tables) | 6 Months Ended
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Jun. 30, 2020
Other Liabilities, Noncurrent [Abstract] |
Schedule of Other Long-Term Liabilities | Other long-term liabilities consist of the following as of December 31, 2019 and June 30, 2020 (in thousands):
| December 31, 2019 |  | June 30, 2020
Contract liabilities, net of current portion | $ | 30,925 |  |  | $ | 32,210 |
Deferred payments related to acquisitions | 4,963 |  |  | 4,232 |
Asset retirement obligations | 1,961 |  |  | 1,902 |
Employee separation costs | 1,838 |  |  | 361 |
Other | 1,764 |  |  | 1,860 |
Other long-term liabilities | $ | 41,451 |  |  | $ | 40,565 |

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