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Business Combination (Narrative) (Details) $ in Millions |  | 6 Months Ended
--- | --- | ---
Aug. 18, 2017 USD ($) state | Nov. 30, 2017 USD ($)
Business Acquisition [Line Items] |  |
Goodwill acquired |  | $ 41.0
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 | $ 41.0 |
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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