CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (DEFICIT) - USD ($)
$ in Thousands |
Common stock |
Additional paid-in capital |
Accumulated other comprehensive income (loss) |
Accumulated deficit |
Total |
| Balances at Beginning of period (in shares) at Dec. 31, 2018 |
79,234,853
|
|
|
|
|
| Balances at Beginning of period at Dec. 31, 2018 |
$ 79
|
$ 543,040
|
$ (29)
|
$ (150,082)
|
$ 393,008
|
| Issuance of common stock upon exercise of stock options (in shares) |
619,342
|
|
|
|
|
| Issuance of common stock upon exercise of stock options |
$ 1
|
798
|
|
|
799
|
| Stock-based compensation expense |
|
9,478
|
|
|
9,478
|
| Vesting of restricted common stock |
|
22
|
|
|
22
|
| Unrealized gains on investments |
|
|
110
|
|
110
|
| Net loss |
|
|
|
(32,581)
|
(32,581)
|
| Balances at End of period (in shares) at Mar. 31, 2019 |
79,854,195
|
|
|
|
|
| Balances at End of period at Mar. 31, 2019 |
$ 80
|
553,338
|
81
|
(181,863)
|
371,636
|
| Balances at Beginning of period (in shares) at Dec. 31, 2018 |
79,234,853
|
|
|
|
|
| Balances at Beginning of period at Dec. 31, 2018 |
$ 79
|
543,040
|
(29)
|
(150,082)
|
393,008
|
| Net loss |
|
|
|
|
163,500
|
| Balances at End of period (in shares) at Dec. 31, 2019 |
80,016,245
|
|
|
|
|
| Balances at End of period at Dec. 31, 2019 |
$ 80
|
586,798
|
75
|
(312,740)
|
274,213
|
| Cumulative effect adjustment for adoption of ASC 842 |
|
|
|
800
|
800
|
| Issuance of common stock upon exercise of stock options (in shares) |
413,721
|
|
|
|
|
| Issuance of common stock upon exercise of stock options |
|
486
|
|
|
486
|
| Stock-based compensation expense |
|
8,488
|
|
|
8,488
|
| Unrealized gains on investments |
|
|
456
|
|
456
|
| Net loss |
|
|
|
(48,486)
|
(48,486)
|
| Balances at End of period (in shares) at Mar. 31, 2020 |
80,429,966
|
|
|
|
|
| Balances at End of period at Mar. 31, 2020 |
$ 80
|
$ 595,772
|
$ 531
|
$ (361,226)
|
$ 235,157
|