EQUITY AND LONG-TERM INVESTMENTS AND FAIR VALUE MEASUREMENTS - Summarized Financial Data (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
Balance Sheet Information
Current assets	$ 344,219		$ 443,511
Current liabilities	38,134		134,968
Income Statement Information
Total revenue	310,463		331,339		$ 391,866
Net loss	179,722		220,262		$ 368,837
Armata
Balance Sheet Information
Current assets	36,585		33,245
Noncurrent assets	76,176		59,636
Current liabilities	21,884		7,004
Noncurrent liabilities	$ 103,263		$ 40,300
Income Statement Information
Total revenue		$ 4,052		$ 5,446		$ 3,989
Loss from operations		(41,639)		(32,666)		(24,227)
Net loss		$ (59,512)		$ (32,650)		(23,732)
Entasis
Income Statement Information
Loss from operations						(52,323)
Net loss						$ (125,413)