v3.26.3
Segment Reporting - Schedule of Segment Reporting Information, by Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Jun. 30, 2026
Mar. 31, 2026
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Sep. 30, 2026
Sep. 30, 2025
Segment Reporting [Line Items]                
Revenues $ 7,557     $ 12,807     $ 35,822 $ 31,530
Costs and expenses:                
Total Manufacture and Supply Expenses 3,606     4,506     11,092 12,719
Total Research and Development Expenses 4,251     4,530     12,417 13,996
General & Administrative expenses:                
Total Selling, General and Administrative Expenses 14,169     15,250     39,209 47,027
Total costs and expenses 22,026     24,286     62,718 73,742
Loss from operations (14,469)     (11,479)     (26,896) (42,212)
Net loss before income taxes (16,496)     (15,446)     (47,417) (51,924)
Net loss (16,496) $ (22,864) $ (8,057) (15,446) $ (13,548) $ (22,930) (47,417) (51,924)
Comprehensive loss (16,496)     (15,446)     (47,417) (51,924)
Reportable Segment                
Segment Reporting [Line Items]                
Revenues 7,557     12,807     35,822 31,530
Costs and expenses:                
Total Manufacture and Supply Expenses 3,606     4,506     11,092 12,719
Total Research and Development Expenses 4,251     4,530     12,417 13,996
Selling expenses:                
Total Selling expenses 3,746     3,915     7,840 10,391
General & Administrative expenses:                
Total General and Administrative Expenses 10,423     11,335     31,369 36,636
Total Selling, General and Administrative Expenses 14,169     15,250     39,209 47,027
Total costs and expenses 22,026     24,286     62,718 73,742
Loss from operations (14,469)     (11,479)     (26,896) (42,212)
Other income/(expenses), net (2,027)     (3,967)     (20,521) (9,712)
Net loss before income taxes (16,496)     (15,446)     (47,417) (51,924)
Net loss (16,496)     (15,446)     (47,417) (51,924)
Comprehensive loss (16,496)     (15,446)     (47,417) (51,924)
Reportable Segment | Anaphylm project expenses                
Costs and expenses:                
Total Research and Development Expenses 1,179     912     3,319 4,604
Reportable Segment | AQST-108 project expenses                
Costs and expenses:                
Total Research and Development Expenses 294     (131)     1,004 254
Reportable Segment | Personnel costs                
Costs and expenses:                
Total Research and Development Expenses 2,218     3,001     6,641 7,351
Selling expenses:                
Total Selling expenses 1,740     805     5,114 2,108
General & Administrative expenses:                
Total General and Administrative Expenses 5,405     5,017     17,516 15,025
Reportable Segment | Other                
Costs and expenses:                
Total Research and Development Expenses 560     748     1,453 1,787
Selling expenses:                
Total Selling expenses 2,006     3,110     2,726 8,283
General & Administrative expenses:                
Total General and Administrative Expenses $ 5,018     $ 6,318     $ 13,853 $ 21,611