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Acquisition - Narrative (Details) - Stormpath Inc.
$ in Millions
Feb. 17, 2017
USD ($)
shares
Business Acquisition [Line Items]  
Total purchase price $ 3.7
Shares included in total consideration (in shares) | shares 200,000
Restricted common stock  
Business Acquisition [Line Items]  
Incremental shares issued (in shares) | shares 800,000
Incremental shares issued $ 8.6
Stock-based compensation vesting period 2 years
Stormpath Investors  
Business Acquisition [Line Items]  
Total purchase price $ 2.2
Stormpath Workforce  
Business Acquisition [Line Items]  
Total purchase price 1.5
Incremental shares issued $ 9.1