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Summary of Significant Accounting Policies - Summary of Effects of Correction of Previously Issued Condensed Consolidated Financial Statements (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Sep. 30, 2025
Sep. 30, 2024
Condensed Consolidated Statement of Operations (unaudited) [Abstract]                
General and administrative $ 28,429     $ 31,744     $ 78,881 $ 92,791
Total operating expenses 100,301     96,604     296,160 290,820
Loss from operations (246)     (13,721)     (24,741) (43,614)
Loss before income taxes 1,660     (10,437)     (17,320) (35,009)
Net loss $ 1,675 $ (8,568) $ (10,353) $ (10,637) $ (4,623) $ (19,888) $ (17,246) $ (35,148)
Net loss per share                
Basic (in usd per share) $ 0.03     $ (0.20)     $ (0.32) $ (0.67)
Diluted (in usd per share) $ 0.03     $ (0.20)     $ (0.32) $ (0.67)
Condensed Consolidated Statement of Comprehensive Loss (unaudited) [Abstract]                
Net loss $ 1,675 (8,568) (10,353) $ (10,637) (4,623) (19,888) $ (17,246) $ (35,148)
Comprehensive loss 1,833     (9,852)     (14,632) (35,364)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Beginning balance 327,370 379,349 378,433 264,669 256,225 261,328 378,433 261,328
Employee stock-based compensation expense 8,393 9,403 8,911 16,902 16,351 16,524   49,777
Net loss 1,675 (8,568) (10,353) (10,637) (4,623) (19,888) (17,246) (35,148)
Ending balance 311,140 327,370 379,349 273,246 264,669 256,225 311,140 273,246
Condensed Consolidated Statement of Cash Flows (unaudited) [Abstract]                
Net loss 1,675 (8,568) (10,353) (10,637) (4,623) (19,888) (17,246) (35,148)
Stock-based compensation             26,773 49,895
Additional Paid-in Capital                
Condensed Consolidated Statement of Operations (unaudited) [Abstract]                
Net loss               0
Condensed Consolidated Statement of Comprehensive Loss (unaudited) [Abstract]                
Net loss               0
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Beginning balance 1,028,591 1,022,982 1,013,193 975,885 962,963 946,511 1,013,193 946,511
Employee stock-based compensation expense 8,393 9,403 8,911 16,902 16,351 16,524   49,777
Net loss               0
Ending balance 1,036,091 1,028,591 1,022,982 994,314 975,885 962,963 1,036,091 994,314
Condensed Consolidated Statement of Cash Flows (unaudited) [Abstract]                
Net loss               0
Accumulated Deficit                
Condensed Consolidated Statement of Operations (unaudited) [Abstract]                
Net loss 1,675 (8,568) (10,353) (10,637) (4,623) (19,888)   (35,148)
Condensed Consolidated Statement of Comprehensive Loss (unaudited) [Abstract]                
Net loss 1,675 (8,568) (10,353) (10,637) (4,623) (19,888)   (35,148)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Beginning balance (695,161) (636,595) (626,242) (703,302) (698,679) (678,269) (626,242) (678,269)
Employee stock-based compensation expense               0
Net loss 1,675 (8,568) (10,353) (10,637) (4,623) (19,888)   (35,148)
Ending balance (719,047) (695,161) (636,595) (713,939) (703,302) (698,679) $ (719,047) (713,939)
Condensed Consolidated Statement of Cash Flows (unaudited) [Abstract]                
Net loss $ 1,675 $ (8,568) $ (10,353) (10,637) $ (4,623) (19,888)   (35,148)
As Previously Reported                
Condensed Consolidated Statement of Operations (unaudited) [Abstract]                
General and administrative       28,515       83,104
Total operating expenses       93,375       281,133
Loss from operations       (10,492)       (33,927)
Loss before income taxes       (7,208)       (25,322)
Net loss       $ (7,408)       $ (25,461)
Net loss per share                
Basic (in usd per share)       $ (0.14)       $ (0.49)
Diluted (in usd per share)       $ (0.14)       $ (0.49)
Condensed Consolidated Statement of Comprehensive Loss (unaudited) [Abstract]                
Net loss       $ (7,408)       $ (25,461)
Comprehensive loss       (6,623)       (25,677)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Beginning balance           261,328   261,328
Employee stock-based compensation expense               40,090
Net loss       (7,408)       (25,461)
Ending balance       273,246       273,246
Condensed Consolidated Statement of Cash Flows (unaudited) [Abstract]                
Net loss       (7,408)       (25,461)
Stock-based compensation               40,208
As Previously Reported | Additional Paid-in Capital                
Condensed Consolidated Statement of Operations (unaudited) [Abstract]                
Net loss               0
Condensed Consolidated Statement of Comprehensive Loss (unaudited) [Abstract]                
Net loss               0
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Beginning balance           946,511   946,511
Employee stock-based compensation expense               40,090
Net loss               0
Ending balance       984,627       984,627
Condensed Consolidated Statement of Cash Flows (unaudited) [Abstract]                
Net loss               0
As Previously Reported | Accumulated Deficit                
Condensed Consolidated Statement of Operations (unaudited) [Abstract]                
Net loss               (25,461)
Condensed Consolidated Statement of Comprehensive Loss (unaudited) [Abstract]                
Net loss               (25,461)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Beginning balance           $ (678,269)   (678,269)
Employee stock-based compensation expense               0
Net loss               (25,461)
Ending balance       (704,252)       (704,252)
Condensed Consolidated Statement of Cash Flows (unaudited) [Abstract]                
Net loss               (25,461)
Adjustments                
Condensed Consolidated Statement of Operations (unaudited) [Abstract]                
General and administrative       3,229       9,687
Total operating expenses       3,229       9,687
Loss from operations       (3,229)       (9,687)
Loss before income taxes       (3,229)       (9,687)
Net loss       $ (3,229)       $ (9,687)
Net loss per share                
Basic (in usd per share)       $ (0.06)       $ (0.18)
Diluted (in usd per share)       $ (0.06)       $ (0.18)
Condensed Consolidated Statement of Comprehensive Loss (unaudited) [Abstract]                
Net loss       $ (3,229)       $ (9,687)
Comprehensive loss       (3,229)       (9,687)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Employee stock-based compensation expense               9,687
Net loss       (3,229)       (9,687)
Condensed Consolidated Statement of Cash Flows (unaudited) [Abstract]                
Net loss       $ (3,229)       (9,687)
Stock-based compensation               9,687
Adjustments | Additional Paid-in Capital                
Condensed Consolidated Statement of Operations (unaudited) [Abstract]                
Net loss               0
Condensed Consolidated Statement of Comprehensive Loss (unaudited) [Abstract]                
Net loss               0
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Employee stock-based compensation expense               9,687
Net loss               0
Condensed Consolidated Statement of Cash Flows (unaudited) [Abstract]                
Net loss               0
Adjustments | Accumulated Deficit                
Condensed Consolidated Statement of Operations (unaudited) [Abstract]                
Net loss               (9,687)
Condensed Consolidated Statement of Comprehensive Loss (unaudited) [Abstract]                
Net loss               (9,687)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Employee stock-based compensation expense               0
Net loss               (9,687)
Condensed Consolidated Statement of Cash Flows (unaudited) [Abstract]                
Net loss               $ (9,687)