v3.10.0.1

Segment and Geographic Information - Geographical Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Geographical Information |  |  |  |  |
Revenue | $ 97,423 | $ 64,995 | $ 189,711 | $ 129,824 |
Short Course Segment |  |  |  |  |
Geographical Information |  |  |  |  |
Revenue | 16,214 |  | 27,943 |  |
Short Course Segment | Non-US |  |  |  |  |
Geographical Information |  |  |  |  |
Revenue | 9,800 |  | 17,200 |  |
Long-lived assets | $ 1,100 |  | $ 1,100 |  | $ 700

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