Stock-Based Compensation - Narratives (Details)	3 Months Ended
Mar. 31, 2021 USD ($) $ / shares shares
Stock-Based Compensation
Aggregate intrinsic value of outstanding options	$ 6,100,000
Aggregate intrinsic value of exercisable options	$ 4,400,000
Stock Options
Stock-Based Compensation
Weighted average grant date fair value (per share) \| $ / shares	$ 10.01
Aggregate intrinsic value of exercisable options	$ 12,000
Restricted Stock Units
Stock-Based Compensation
Vesting period	4 years
Weighted average grant date fair value (per share) \| $ / shares	$ 16.63
Aggregate intrinsic value of exercisable options	$ 2,800,000
Unrecognized compensation expense	$ 2,200,000
Weighted average period for recognition of unrecognized expenses	3 years 10 months 24 days
2012 Stock Incentive Plan \| Current Liability
Stock-Based Compensation
Proceeds from early exercise of option	$ 1,000
2012 Stock Incentive Plan \| Stock Options
Stock-Based Compensation
Unrecognized compensation expense	$ 5,800,000
Weighted average period for recognition of unrecognized expenses	2 years 7 months 6 days
2019 Equity Incentive Plan
Stock-Based Compensation
Shares available for future issuance \| shares	873,688
Common Stock Capital Shares Reserved For Future Annual Issuance \| shares	432,442
Common Stock Capital Shares Reserved For Future Issuance, Percentage Of Shares Outstanding Last Day Of Fiscal Year	4.00%
2019 Equity Incentive Plan \| Stock Options
Stock-Based Compensation
Vesting period	4 years
Vesting term	P10Y

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Common Stock Capital Shares Reserved For Future Issuance, Percentage Of Shares Outstanding Last Day Of Fiscal Year

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

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Aggregate number of common shares reserved for future issuance.

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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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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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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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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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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

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