Description of Business - Schedule of Segment Revenues and Significant Expense Categories in Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenues:
Total revenues	$ 285,504	$ 198,962	$ 99,770
Less significant segment expenses (income):
Cost of goods sold - commercial	17,429	20,863	16,003
Research and development	45,893	31,283	19,721
Interest income, net	12,615	6,154	2,513
Consolidated net income (loss)	27,588	(11,938)	(87,400)
Other Significant Segment
Revenues:
Total revenues	285,504	198,962	99,770
Less significant segment expenses (income):
Cost of goods sold - commercial	17,429	20,863	16,003
Cost of revenue - collaborations and services	59,173	41,908	41,494
Research and development	45,893	31,283	19,721
Selling	49,191	51,776	53,753
General and administrative	45,138	42,538	37,720
Interest income, net	(12,615)	(6,154)	(2,513)
Interest expense, net	37,981	25,161	24,769
Loss on settlement of debt	20,444
Other segment items	(4,718)	3,525	(3,777)
Consolidated net income (loss)	27,588	(11,938)	(87,400)
Afrezza | Other Significant Segment
Revenues:
Total revenues	64,041	54,914	43,316
V-Go | Other Significant Segment
Revenues:
Total revenues	18,288	19,115	12,931
Collaborations and services
Revenues:
Total revenues	100,840	52,954	27,924
Less significant segment expenses (income):
Cost of revenue - collaborations and services	59,173	41,908	41,494
Collaborations and services | Other Significant Segment
Revenues:
Total revenues	100,840	52,954	27,924
Royalties
Revenues:
Total revenues	102,335	71,979	15,599
Royalties | Other Significant Segment
Revenues:
Total revenues	$ 102,335	$ 71,979	$ 15,599