Share-based Compensation - Schedule of Restricted Stock Units Granted (Parenthetical) (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended			15 Months Ended
		Jul. 30, 2021	Mar. 31, 2022		Mar. 31, 2021	Nov. 20, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vested not delivered, Number of units			283,335
Share-based compensation expense			$ 1,387		$ 2,046
Retirement of treasury stock			$ 6		$ 0
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			2 years
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			4 years
Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted, Number of units	[1]		102,500
Vested not delivered, Number of units			282,585	[2]		455,000
Grant date fair value	[1]		$ 25.40
Performance Based Restricted Stock Units | Employees And Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted, Number of units			102,500
Performance Based Restricted Stock Units | Employees And Directors | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grant date fair value			$ 24.42
Performance Based Restricted Stock Units | Employees And Directors | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grant date fair value			$ 28.75
Criteria Four | Performance Based Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
RSU Grant Vested		$ 0
Share-based compensation expense			$ 0
Criteria Four | Performance Based Restricted Stock Units | Non Executive Employee
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted, Number of units		120,000
Grant date fair value		$ 27.23
2018 Stock Incentive Plan | Share Based Compensation Award Tranche Two Member | Performance Based Restricted Stock Units | Employees And Directors | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Positive adjusted EBITDA threshold limit for vesting of grants						$ 2,000
2018 Stock Incentive Plan | Share Based Compensation Award Tranche One Member | Performance Based Restricted Stock Units | Employees And Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Gross revenue threshold limit for vesting of grants						$ 12,500

[1] During the three months ended March 31, 2022, the Company granted an aggregate of 102,500 RSUs to certain employees at grant date fair values ranging from $24.42 to $28.75 per share, with a vesting period ranging from two to four years.

[2] The amount included in "Vested not delivered" above represents RSUs that have been vested but the delivery of the common stock underlying such RSUs had not occurred as of March 31, 2022. During the period from August 29, 2019 to November 20, 2020, the Company granted an aggregate of 455,000 RSUs. Such RSU grants shall not vest unless and until the Company has, for any fiscal quarter in which the RSUs are outstanding, (i) gross revenue determined in accordance with the Company’s reviewed or audited financial statements in excess of $12.5 million for such fiscal quarter, and (ii) positive adjusted EBITDA of at least $2.0 million, as determined based on amounts derived from the Company’s reviewed or audited financial statements for such fiscal quarter, subject to the recipient continuing to provide services to the Company either as an employee, director or consultant on the last day of the quarter that the performance criteria are met. Provided the respective performance criteria are met, the RSUs will vest in accordance with the time-based requirements contained in the award agreement over three years. In the event of a change of control, all RSUs which have not vested on the date of such change of control shall immediately vest even if the performance criteria have not been met. As of the respective grant dates, the Company determined that it was probable that such performance criteria would be met and therefore, began to record the related amortization expense on the grant dates. The Company determined that the performance criteria were met as of March 31, 2022. As a result, 283,335 RSUs were included in "Vested not delivered" above.