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Business Combination (Narrative) (Details) $ in Millions | 3 Months Ended
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Aug. 31, 2017 USD ($) state
Business Acquisition [Line Items] |
Goodwill acquired | $ 40.9
HR Outsourcing, Inc. [Member] |
Business Acquisition [Line Items] |
Effective acquisition date | Aug. 18, 2017
Purchase price | $ 75.4
Cash portion of purchase price | 42.2
Common stock issued portion of purchase price | 33.2
Goodwill acquired | $ 40.9
HR Outsourcing, Inc. [Member] | Minimum [Member] |
Business Acquisition [Line Items] |
Number of states in which HR Solutions services are provided | state | 35

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