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Commitments and Contingencies - Legal Proceedings (Details)
$ in Millions
1 Months Ended
Sep. 30, 2015
claim
Dec. 31, 2014
patent
Oct. 31, 2013
claim
Feb. 28, 2017
USD ($)
Nationwide Breach of Contract and Unjust Enrichment Claims | Pending Litigation        
Loss Contingencies [Line Items]        
Number of claims filed | claim     1  
Smartflash LLC and Smartflash Technologies Limited        
Loss Contingencies [Line Items]        
Number of patents allegedly infringed | patent   7    
Violation of Fair Credit Reporting Act | Pending Litigation        
Loss Contingencies [Line Items]        
Number of claims filed | claim 2      
Legal Proceedings with Eolas Technologies, Inc. | Pending Litigation | Minimum        
Loss Contingencies [Line Items]        
Estimate of possible loss | $       $ 130
Legal Proceedings with Eolas Technologies, Inc. | Pending Litigation | Maximum        
Loss Contingencies [Line Items]        
Estimate of possible loss | $       $ 250