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Net Loss Per Share | 12 Months Ended
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Dec. 31, 2018
Net Loss Per Share [Abstract] |
Net Loss Per Share | NOTE 10. NET LOSS PER SHARE ﻿ The following options outstanding, time-based RSUs and performance-based RSUs were excluded from the computation of diluted net loss per share for the periods presented because the effect of including such shares would have been antidilutive: ﻿ ﻿ ﻿
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﻿ | Years Ended December 31,
﻿(in thousands) | 2018 |  | 2017 |  | 2016
﻿Options to purchase common stock | 25,176 |  | 25,404 |  | 22,501
﻿RSUs with time-based vesting | 371 |  | — |  | —
﻿RSUs with performance-based vesting | 586 |  | — |  | —
﻿ ﻿

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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