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Commitments and Contingencies - Litigation (Details) - USD ($)
$ in Millions
1 Months Ended
Feb. 13, 2018
Oct. 07, 2013
Feb. 28, 2018
Loss Contingencies [Line Items]      
Payment of legal settlement     $ 4.5
Amount of reimbursement of attorneys fees and portion of settlement.     $ 1.9
Tails Inc.      
Loss Contingencies [Line Items]      
Cash consideration   $ 20.2  
Selling, General and Administrative Expenses      
Loss Contingencies [Line Items]      
Charges on settlement $ 2.6