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Other Long-Term Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2017
Other Long-Term Liabilities [Abstract] |
Schedule of other long-term liabilities | Other long-term liabilities consist of the following as of December 31, 2016 and 2017 (in thousands):
|  | 2016 |  | 2017
Deferred revenue, net of current portion |  | $ | 17,981 |  | $ | 21,033
Deferred rent and other facility costs |  |  | 8,251 |  |  | 7,113
Deferred payments related to acquisitions |  |  | 13,754 |  |  | 6,385
Loss on facilities not in use |  |  | 7,813 |  |  | 5,652
Lease incentives |  |  | 2,684 |  |  | 2,832
Other long-term liabilities |  | $ | 50,483 |  | $ | 43,015

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- Definition Tabular disclosure of other noncurrent liabilities. + References No definition available. + Details
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