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Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 246,508 | $ 116,469
Strayer University Segment |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 128,058 | 115,271
Strayer University Segment | Tuition, net of discounts, grants and scholarships |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 123,515 | 110,960
Strayer University Segment | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 4,543 | 4,311
Capella University Segment |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 114,698 | 0
Capella University Segment | Tuition, net of discounts, grants and scholarships |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 109,468 | 0
Capella University Segment | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 5,230 | 0
Non-Degree Programs Segment |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 3,752 | $ 1,198

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