Stock-Based Incentive Compensation Plans - Narrative (Details) $ in Thousands	1 Months Ended		3 Months Ended				9 Months Ended
	Jan. 31, 2022	May 31, 2020 purchase_period	Sep. 30, 2022 USD ($) shares	Jun. 30, 2022 USD ($)	Sep. 30, 2021 USD ($) shares	Jun. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) shares	Sep. 30, 2021 USD ($) shares	Dec. 31, 2021 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost, stock options | $			$ 300				$ 300
Stock options granted (in shares) | shares			0		0		0	0
Early exercise of stock options, share subject to repurchase (in shares) | shares			0				0		0
Issuance of common stock related to employee stock purchase plan (in shares) | shares							112,773	104,861
Issuance of common stock related to employee stock purchase plan | $				$ 1,199	$ 0	$ 1,566	$ 1,600	$ 1,600
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost, expected period for recognition (in years)							3 months 18 days
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost, expected period for recognition (in years)							2 years 7 months 6 days
Unrecognized compensation cost | $			$ 38,000				$ 38,000
Granted (in shares) | shares							1,252,165
Restricted Stock Units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period							2 years
Restricted Stock Units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period							4 years
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost, expected period for recognition (in years)							2 years 3 months 18 days
Unrecognized compensation cost | $			1,900				$ 1,900
Granted (in shares) | shares							155,596
2018 ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price of common stock as a percent of fair market value (percent)							85.00%
Employee stock purchase program offering period interval (in months)		12 months					6 months
Number of purchase periods in offering interval | purchase_period		2
Accrued compensation and related expenses for employee payroll deductions | $			$ 500				$ 500		$ 300
2018 ESPP | Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period	3 years