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Stock-Based Compensation - Summary of RSU Activity and Related Information (Details) - Restricted Stock Units
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Shares Subject to Outstanding Awards, Beginning Balance | shares 162,946
Shares Subject to Outstanding Awards, RSUs awarded | shares 643,814
Shares Subject to Outstanding Awards, RSUs released | shares (42,214)
Shares Subject to Outstanding Awards, RSUs forfeited | shares (23,450)
Shares Subject to Outstanding Awards, Ending Balance | shares 741,096
Weighted Average Grant Date Fair Value. Beginning Balance | $ / shares $ 53.37
Weighted Average Grant Date Fair Value. RSUs awarded | $ / shares 45.36
Weighted Average Grant Date Fair Value. RSUs released | $ / shares 53.08
Weighted Average Grant Date Fair Value. RSUs forfeited | $ / shares 48.23
Weighted Average Grant Date Fair Value. Ending Balance | $ / shares $ 46.59
Weighted Average Remaining Contractual Term 2 years 2 months 12 days
Aggregate Intrinsic Value | $ $ 54,015