Stock based compensation - Additional Information (Details) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2020 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award requisite service period	2 years
Stock options awarded, value \| $	$ 0
Unrecognized stock-based compensation expense \| $	$ 6,797
Unrecognized stock-based compensation recognition period	Feb. 27, 2022
Share-based compensation arrangement by share-based payment award, fair value assumptions, method used	Black-Scholes option pricing model
Fair value of the options granted \| $ / shares	$ 2.84
Share-based compensation arrangement by share-based payment award, contractual life	10 years
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage	50.00%
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Units, Vested	0
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options, Vested	0
Number of Options, Exercisable	0
2019 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payments based on the value of its common stock	2,000,000
One-time IPO Unit Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense \| $	$ 304
Unrecognized stock-based compensation recognition period	Jun. 30, 2020
2020 Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award requisite service period	2 years
Share-based compensation arrangement by share-based payment award, contractual life	10 years
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage	50.00%
Share based compensation arrangement by share based payment award, options average expected term	5 years 9 months
2020 Option [Member] \| Share-based Compensation Award, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation arrangement by share based payment award, options expected term	5 years 6 months
2020 Option [Member] \| Share-based Compensation Award, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation arrangement by share based payment award, options expected term	6 years

Employee service share based compensation nonvested awards total compensation cost not yet recognized period.

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- Definition

Share based compensation arrangement by share based payment award options average expected term.

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Share based compensation arrangement by share based payment award options expected term.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Description of method used to estimate fair value of award under share-based payment arrangement.

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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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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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Percentage of vesting of award under share-based payment arrangement.

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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.

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Number of options vested.

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- Definition

Number of share options (or share units) exercised during the current period.

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Value, after forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).

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- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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