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Basis of Presentation - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Jun. 30, 2018
Noncontrolling Interest [Line Items] |  |  |
Acquisition of additional non-controlling interests | $ 583 | $ 0 |
OT South Africa |  |  |
Noncontrolling Interest [Line Items] |  |  |
Ownership percentage by Open Text | 70.00% |  |
GXS Singapore |  |  |
Noncontrolling Interest [Line Items] |  |  |
Ownership percentage by Open Text | 81.00% |  |
GXS Korea |  |  |
Noncontrolling Interest [Line Items] |  |  |
Ownership percentage by Open Text |  |  | 85.00%
Acquisition of additional non-controlling interests | $ 600 |  |

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