Stock-Based Compensation - Narratives (Details)	3 Months Ended
Mar. 31, 2020 USD ($) $ / shares shares
Stock-Based Compensation
Weighted Average Grant Date Fair Value per share \| $ / shares	$ 8.48
Aggregate intrinsic value	$ 12,000
2012 Stock Incentive Plan
Stock-Based Compensation
Shares available for future issuance \| shares	259,065
Vesting Period	4 years
Vesting Term	P10Y
Unrecognized compensation expense	$ 5,800,000
Weighted Average period for recognition of unrecognized expenses	3 years 3 months
2012 Stock Incentive Plan \| Current Liability
Stock-Based Compensation
Proceeds from early exercise of option	$ 2,000

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

No definition available.

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Aggregate number of common shares reserved for future issuance.

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-Name Accounting Standards Codification
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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.

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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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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.

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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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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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

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