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Stock-Based Compensation - Summary of Restricted Stock Unit (RSU) Activity (Details) - Restricted Stock Units (RSUs)
shares in Thousands
9 Months Ended
Sep. 30, 2020
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Outstanding, number of awards (in shares) | shares 61
Vested and released (in shares) | shares (15)
Forfeited/canceled, number of awards (in shares) | shares (46)
Outstanding, weighted average grant date fair value per share (in dollars per share) | $ / shares $ 5.92
Vested and released, weighted average grant date fair value per share (in dollars per share) | $ / shares 5.92
Forfeited/canceled, weighted average grant date fair value per share (in dollars per share) | $ / shares $ 5.92