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Business Combinations Narrative (Details) - USD ($) |  |  | 6 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jul. 27, 2017 | Sep. 15, 2016 | Jun. 30, 2017 | Sep. 30, 2017 | Mar. 31, 2018 | Mar. 31, 2017
Mapi Group [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Cash outflows on acquisition | $ 145,800,000 |  |  |  |  |
Working capital adjustment | 1,645,000 |  |  |  |  |
Estimate of intangible assets acquired | $ 32,330,000 |  |  |  |  |
Clinical Research Management Inc. |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Cash outflows on acquisition |  | $ 52,400,000 |  |  |  |
Certain payments made on behalf of business acquired |  | 9,200,000 |  |  |  |
Contingent consideration |  | $ 12,000,000 |  |  |  |
Fair value of contingent consideration liability |  |  | $ 0 |  | $ 0 | $ 6,000,000
Fair value adjustments made to unbilled revenue |  |  |  | $ 1,100,000 |  |
Fair value adjustments made to other liabilities |  |  |  | 1,100,000 |  |
Fair value adjustments made to AR acquired |  |  |  | 300,000 |  |
Fair value of adjustments made to accounts payable |  |  |  | $ 500,000 |  |
Clinical Research Management Inc. | Selling, General and Administrative Expenses [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Contingent consideration recorded in SG&A costs |  |  | $ 6,000,000 |  |  |

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