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Other Long-Term Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2016
Other Long-Term Liabilities [Abstract] |
Schedule of other long-term liabilities | Other long-term liabilities consist of the following as of December 31, 2015 and 2016 (in thousands):
|  | 2015 |  | 2016
Deferred payments related to acquisitions |  | $ | 6,078 |  | $ | 13,754
Deferred revenue, net of current portion |  |  | 14,429 |  |  | 17,981
Loss on facilities not in use |  |  | 15,229 |  |  | 7,813
Deferred rent and other facility costs |  |  | 8,993 |  |  | 8,251
Lease incentives |  |  | 3,125 |  |  | 2,684
Deferred gain on sale of campus building |  |  | 133 |  |  | —
Other long-term liabilities |  | $ | 47,987 |  | $ | 50,483

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