Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2017	Sep. 30, 2017
Prior Period Adjustments Restatement [Line Items]
Prior period reclassification adjustment	$ 1.8	$ 5.1
Sales and marketing
Prior Period Adjustments Restatement [Line Items]
Prior period reclassification adjustment	$ 0.7	$ 2.1

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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