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Stock-Based Compensation and Stockholder's Equity - Schedule of Share-based Compensation, Restricted Stock Units Activity (Details) - Restricted Stock Units (RSUs)
3 Months Ended
Mar. 31, 2019
$ / shares
shares
Restricted Stock Units  
Outstanding at the beginning of the Period (in shares) 1,283,372
Granted (in shares) 352,869
Vested (in shares) (352,584)
Outstanding at the end of the Period (in shares) 1,283,657
Weighted-Average Grant Date Fair Value  
Unvested outstanding as of beginning of period | $ / shares $ 23.93
Unvested outstanding as of end of period | $ / shares $ 32.19