Description of Business and Significant Accounting Policies - Schedule of Segment Revenues and Significant Expense Categories in Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Revenues:
Total revenues	$ 78,354	$ 66,263
Less significant segment expenses (income):
Cost of goods sold - commercial	3,768	3,819
Research and development	11,022	10,013
Interest income, net	1,956	3,434
Consolidated net income	13,158	10,630
Other Significant Segment
Revenues:
Total revenues	78,354	66,263
Less significant segment expenses (income):
Cost of goods sold - commercial	3,768	3,819
Cost of revenue - collaborations and services	13,748	14,779
Research and development	11,022	10,013
Selling	13,762	11,601
General and administrative	11,252	10,728
Interest income, net	(1,956)	(3,434)
Interest expense, net	10,632	9,262
Other segment items	2,968	(1,135)
Consolidated net income	13,158	10,630
Afrezza | Other Significant Segment
Revenues:
Total revenues	14,887	14,438
V-Go | Other Significant Segment
Revenues:
Total revenues	4,086	4,326
Collaborations and services
Revenues:
Total revenues	29,376	24,848
Less significant segment expenses (income):
Cost of revenue - collaborations and services	13,748	14,779
Collaborations and services | Other Significant Segment
Revenues:
Total revenues	29,376	24,848
Royalties
Revenues:
Total revenues	30,005	22,651
Royalties | Other Significant Segment
Revenues:
Total revenues	$ 30,005	$ 22,651