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Stock Option Plan - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 1,306	$ 1,354	$ 4,122	$ 3,551
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, unrecognized compensation cost	$ 3,500		$ 3,500
Stock options, cost not yet recognized, remaining weighted average vesting period			1 year 4 months 9 days
Granted (in shares)	0		63,000
Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares that remain available for future awards (in shares)	413,425		413,425
Maximum employee payroll deduction percentage	20.00%		20.00%
Stock options, cost not yet recognized, remaining weighted average vesting period			4 months 28 days
Stock-based compensation expense	$ 100	$ 100	$ 100	$ 100
Unrecognized compensation cost related to stock purchase	100		100
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, unrecognized compensation cost	$ 7,700		$ 7,700
Stock options, cost not yet recognized, remaining weighted average vesting period			3 years 1 month 6 days
2019 Incentive Award Plan | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, expiration period			10 years
Stock options, vesting period			4 years
Shares that remain available for future awards (in shares)	1,528,877		1,528,877

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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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 highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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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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