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Summary of Company's RSU Activity (Detail) - Restricted Stock Units - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Number of Shares |  |
Outstanding, Begining Balance | 373,706 |
Granted | 1,287,453 |
Vested | (84,409) |
Cancelled/forfeited | (131,587) |
Outstanding, Ending Balance | 1,445,163 | 373,706
Weighted Average Grant Date Fair Value |  |
Weighted Average Grant Date Fair Value , Begining Balance | $ 21.07 |
Weighted Average Grant Date Fair Value, Granted | 25.22 | $ 21.07
Weighted Average Grant Date Fair Value, Vested | 21.05 |
Weighted Average Grant Date Fair Value, Cancelled/forfeited | 23.97 |
Weighted Average Grant Date Fair Value, Ending Balance | $ 24.50 | $ 21.07
Aggregate Intrinsic Value |  |
Aggregate Intrinsic Value, Outstanding | $ 61,824 |

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