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Stock-based Compensation - 2014 Equity Incentive Plan (Details) - 2014 Equity Incentive Plan - shares |  | 12 Months Ended
--- | --- | ---
May 02, 2014 | Dec. 31, 2019 | Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Number of additional awards expected to be granted (in shares) | 0 |  |
Expiration period of options |  | 10 years |
Common stock outstanding percentage | 4.00% |  |
Number of shares of common stock for future issuance, board of directors prerogative, increase in period (in shares) | 0 |  |
Share-based compensation arrangement by share-based payment award, number of additional shares authorized |  | 1,918,879 | 1,158,866
Possible future issuance under equity compensation plan (in shares) |  |  | 554,774
Minimum |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Vesting period of options |  | 3 years |
Maximum |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Vesting period of options |  | 4 years |
Base number of new shares available for future issuance under equity incentive plan (in shares) | 1,122,731 |  |
Common stock issuable period | 10 years |  |

X
- Definition The base number of new shares of common stock that may be issued after the effective date of the 2014 equity incentive plan, adjusted by certain amounts as described in the plan agreement, to arrive at an aggregate number of new shares of common stock that may be issued under the plan. + References No definition available. + Details
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- Definition Common stock capital shares reserved for future issuance, board of directors prerogative, increase during period. + References No definition available. + Details
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- Definition Common stock issuable period under equity incentive plan. + References No definition available. + Details
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- Definition The number of additional awards to be granted under the 2009 Equity Incentive Plan on or after the effective date of the 2014 equity incentive plan. + References No definition available. + Details
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- Definition Percentage of capital stock outstanding. + References No definition available. + Details
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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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. + References No definition available. + Details
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- Definition Number of additional shares authorized for issuance under share-based payment arrangement. + References No definition available. + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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