Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Other Commitments and Legal Matters (Details)

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Commitments and Contingencies - Other Commitments and Legal Matters (Details)
$ in Millions
Oct. 18, 2018
USD ($)
Jul. 18, 2016
action
Dec. 31, 2015
complaint
Legal matters      
Number of putative securities class action complaints filed against the Company | complaint     2
Number of additional purported shareholder derivative actions filed | action   2  
Litigation With Regatta Solutions Inc | Minimum      
Legal matters      
Claim for general and compensatory damages | $ $ 1.5