Condensed Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands |
Total |
Common Stock |
Additional Paid-in Capital |
Accumulated Other Comprehensive Income (Loss) |
Accumulated Deficit |
Balances at Dec. 31, 2020 |
$ 332,048
|
$ 46
|
$ 559,746
|
$ 129
|
$ (227,873)
|
Common Stock Balance, Shares at Dec. 31, 2020 |
|
45,752,116
|
|
|
|
Exercise of common stock options |
1,360
|
|
1,360
|
|
|
Exercise of common stock options, Shares |
|
129,161
|
|
|
|
Issuance of common stock under Employee Stock Purchase Plan |
873
|
|
873
|
|
|
Issuance of common stock under Employee Stock Purchase Plan, Shares |
|
93,346
|
|
|
|
Vesting of restricted stock units, Shares |
|
147,349
|
|
|
|
Stock transaction associated with taxes withheld on restricted stock units |
(407)
|
|
(407)
|
|
|
Stock transaction associated with taxes withheld on restricted stock units,Shares |
|
(18,366)
|
|
|
|
Stock-based compensation expense |
3,952
|
|
3,952
|
|
|
Net unrealized gain (loss) on available-for-sale securities |
(129)
|
|
|
(129)
|
|
Net loss |
(30,359)
|
|
|
|
(30,359)
|
Balances at Mar. 31, 2021 |
307,338
|
$ 46
|
565,524
|
|
(258,232)
|
Common Stock Balance, Shares at Mar. 31, 2021 |
|
46,103,606
|
|
|
|
Balances at Dec. 31, 2020 |
332,048
|
$ 46
|
559,746
|
129
|
(227,873)
|
Common Stock Balance, Shares at Dec. 31, 2020 |
|
45,752,116
|
|
|
|
Net unrealized gain (loss) on available-for-sale securities |
(159)
|
|
|
|
|
Net loss |
(67,413)
|
|
|
|
|
Balances at Sep. 30, 2021 |
283,580
|
$ 46
|
578,850
|
(30)
|
(295,286)
|
Common Stock Balance, Shares at Sep. 30, 2021 |
|
46,261,060
|
|
|
|
Balances at Mar. 31, 2021 |
307,338
|
$ 46
|
565,524
|
|
(258,232)
|
Common Stock Balance, Shares at Mar. 31, 2021 |
|
46,103,606
|
|
|
|
Exercise of common stock options |
452
|
|
452
|
|
|
Exercise of common stock options, Shares |
|
40,902
|
|
|
|
Return and retirement of common stocks |
|
6,804
|
|
|
|
Vesting of restricted stock units, Shares |
|
3,750
|
|
|
|
Stock-based compensation expense |
5,907
|
|
5,907
|
|
|
Net unrealized gain (loss) on available-for-sale securities |
(45)
|
|
|
(45)
|
|
Net loss |
(6,152)
|
|
|
|
(6,152)
|
Balances at Jun. 30, 2021 |
307,500
|
$ 46
|
571,883
|
(45)
|
(264,384)
|
Common Stock Balance, Shares at Jun. 30, 2021 |
|
46,141,454
|
|
|
|
Exercise of common stock options |
160
|
|
160
|
|
|
Exercise of common stock options, Shares |
|
15,911
|
|
|
|
Issuance of common stock under Employee Stock Purchase Plan |
892
|
|
892
|
|
|
Issuance of common stock under Employee Stock Purchase Plan, Shares |
|
52,463
|
|
|
|
Vesting of restricted stock units, Shares |
|
81,375
|
|
|
|
Stock transaction associated with taxes withheld on restricted stock units |
(580)
|
|
(580)
|
|
|
Stock transaction associated with taxes withheld on restricted stock units,Shares |
|
(30,143)
|
|
|
|
Stock-based compensation expense |
6,495
|
|
6,495
|
|
|
Net unrealized gain (loss) on available-for-sale securities |
15
|
|
|
15
|
|
Net loss |
(30,902)
|
|
|
|
(30,902)
|
Balances at Sep. 30, 2021 |
283,580
|
$ 46
|
578,850
|
(30)
|
(295,286)
|
Common Stock Balance, Shares at Sep. 30, 2021 |
|
46,261,060
|
|
|
|
Balances at Dec. 31, 2021 |
252,564
|
$ 46
|
586,243
|
(314)
|
(333,411)
|
Common Stock Balance, Shares at Dec. 31, 2021 |
|
46,327,131
|
|
|
|
Exercise of common stock options |
180
|
|
180
|
|
|
Exercise of common stock options, Shares |
|
32,497
|
|
|
|
Issuance of common stock under Employee Stock Purchase Plan |
1,006
|
|
1,006
|
|
|
Issuance of common stock under Employee Stock Purchase Plan, Shares |
|
146,165
|
|
|
|
Vesting of restricted stock units |
|
$ 1
|
(1)
|
|
|
Vesting of restricted stock units, Shares |
|
465,731
|
|
|
|
Stock transaction associated with taxes withheld on restricted stock units |
(404)
|
|
(404)
|
|
|
Stock transaction associated with taxes withheld on restricted stock units,Shares |
|
(44,665)
|
|
|
|
Stock-based compensation expense |
6,974
|
|
6,974
|
|
|
Net unrealized gain (loss) on available-for-sale securities |
(838)
|
|
|
(838)
|
|
Net loss |
(39,110)
|
|
|
|
(39,110)
|
Balances at Mar. 31, 2022 |
220,372
|
$ 47
|
593,998
|
(1,152)
|
(372,521)
|
Common Stock Balance, Shares at Mar. 31, 2022 |
|
46,926,859
|
|
|
|
Balances at Dec. 31, 2021 |
252,564
|
$ 46
|
586,243
|
(314)
|
(333,411)
|
Common Stock Balance, Shares at Dec. 31, 2021 |
|
46,327,131
|
|
|
|
Net unrealized gain (loss) on available-for-sale securities |
(1,022)
|
|
|
|
|
Net loss |
(84,610)
|
|
|
|
|
Balances at Sep. 30, 2022 |
229,726
|
$ 55
|
649,028
|
(1,336)
|
(418,021)
|
Common Stock Balance, Shares at Sep. 30, 2022 |
|
54,631,360
|
|
|
|
Balances at Mar. 31, 2022 |
220,372
|
$ 47
|
593,998
|
(1,152)
|
(372,521)
|
Common Stock Balance, Shares at Mar. 31, 2022 |
|
46,926,859
|
|
|
|
Exercise of common stock options |
2
|
|
2
|
|
|
Exercise of common stock options, Shares |
|
298
|
|
|
|
Vesting of restricted stock units, Shares |
|
31,375
|
|
|
|
Stock transaction associated with taxes withheld on restricted stock units |
(9)
|
|
(9)
|
|
|
Stock transaction associated with taxes withheld on restricted stock units,Shares |
|
(1,296)
|
|
|
|
Stock-based compensation expense |
6,696
|
|
6,696
|
|
|
Issuance of common stock in connection with At-The-Market sale, net of issuance costs |
8,213
|
$ 2
|
8,211
|
|
|
Issuance of common stock in connection with At-The-Market sale, net of issuance costs, Shares |
|
1,716,996
|
|
|
|
Net unrealized gain (loss) on available-for-sale securities |
(204)
|
|
|
(204)
|
|
Net loss |
(26,012)
|
|
|
|
(26,012)
|
Balances at Jun. 30, 2022 |
209,058
|
$ 49
|
608,898
|
(1,356)
|
(398,533)
|
Common Stock Balance, Shares at Jun. 30, 2022 |
|
48,674,232
|
|
|
|
Exercise of common stock options |
85
|
|
85
|
|
|
Exercise of common stock options, Shares |
|
16,659
|
|
|
|
Issuance of common stock under Employee Stock Purchase Plan |
607
|
|
607
|
|
|
Issuance of common stock under Employee Stock Purchase Plan, Shares |
|
124,351
|
|
|
|
Vesting of restricted stock units, Shares |
|
76,875
|
|
|
|
Stock transaction associated with taxes withheld on restricted stock units |
(50)
|
|
(50)
|
|
|
Stock transaction associated with taxes withheld on restricted stock units,Shares |
|
(7,606)
|
|
|
|
Stock-based compensation expense |
6,782
|
|
6,782
|
|
|
Issuance of common stock in connection with At-The-Market sale, net of issuance costs |
32,712
|
$ 6
|
32,706
|
|
|
Issuance of common stock in connection with At-The-Market sale, net of issuance costs, Shares |
|
5,746,849
|
|
|
|
Net unrealized gain (loss) on available-for-sale securities |
20
|
|
|
20
|
|
Net loss |
(19,488)
|
|
|
|
(19,488)
|
Balances at Sep. 30, 2022 |
$ 229,726
|
$ 55
|
$ 649,028
|
$ (1,336)
|
$ (418,021)
|
Common Stock Balance, Shares at Sep. 30, 2022 |
|
54,631,360
|
|
|
|