Stock Option Plans (Narrative) (Details) $ in Thousands	6 Months Ended
Jun. 30, 2022 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expensed not yet recognized	$ 20,834
Compensation expensed not yet recognized, period for recognition	2 years 6 months 21 days
ISO and NSO [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise threshold as a percentage of fair value of shares	10.00%
Option term	10 years
Option vesting term	4 years
ISO [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise threshold as a percentage of fair value of shares	100.00%
NSO [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise threshold as a percentage of fair value of shares	85.00%
Common Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value of options exercised	$ 3,154
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option vesting term	4 years
Compensation expensed not yet recognized, period for recognition	3 years 3 months 10 days
Unrecognized compensation costs of unvested RSUs	$ 41,989
Maximum [Member] \| ISO and NSO [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise threshold as a percentage of fair value of shares	110.00%
2019 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock reserved for issuance (in shares) \| shares	6,417,317
Compensation expensed not yet recognized, period for recognition	4 months 17 days
Unrecognized compensation costs related to the ESPP	$ 428
2019 Equity Incentive Plan [Member] \| Common Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common stock under employee stock purchase plan (in shares) \| shares	217,502
Shares available for future issuance (in shares) \| shares	1,221,354

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