Amount received from early exercise of stock option which is treated as part of current liability.

No definition available.

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- Definition

Aggregate number of common shares reserved for future issuance.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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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.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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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.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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-Publisher FASB
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- Definition

Description of terms of award under share-based payment arrangement.

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Stock-Based Compensation - Narratives (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Stock-Based Compensation
Vesting Period	3 years
2012 Stock Incentive Plan
Stock-Based Compensation
Vesting Period	4 years
Vesting Term	P10Y
Weighted Average Grant Date Fair Value per share	$ 6.81	$ 1.08	$ 0.54
Unrecognized compensation expense	$ 5,700,000
Weighted Average period for recognition of unrecognized expenses	3 years 4 months 24 days
2012 Stock Incentive Plan \| Current Liability
Stock-Based Compensation
Proceeds from early exercise of option	$ 4,000
2019 Equity Incentive Plan
Stock-Based Compensation
Shares available for future issuance	323,715