Equity Incentive Plans - Schedule of Stock Options Outstanding, Exercisable and Vested (Details) - 2005 Plan and 2017 Plan - $ / shares |
12 Months Ended | |||
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Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||||
| Outstanding balance | 820,186 | 1,294,128 | 1,130,141 | 938,250 |
| Weighted-average Remaining Contractual Life (years) | 7 years 2 months 1 day | 6 years 2 months 19 days | 6 years 3 months 14 days | |
| Exercisable and Vested balance | 439,927 | 883,959 | 842,261 | |
| Weighted-average Remaining Contractual Life (years) | 5 years 11 months 26 days | 5 years | 5 years 3 months 25 days | |
| Weighted-average Exercise Price | $ 1.66 | $ 0.85 | $ 0.74 | |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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