Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Pulthera LLC	Private Investment in Public Equity Financing	RWI and C.V. Starr Loan	Common Stock	Common Stock Pulthera LLC	Common Stock Private Investment in Public Equity Financing	Additional Paid-in Capital	Additional Paid-in Capital Pulthera LLC	Additional Paid-in Capital Private Investment in Public Equity Financing	Additional Paid-in Capital RWI and C.V. Starr Loan	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2022	$ 198,901				$ 1			$ 844,387				$ (645,496)	$ 9
Balance (in Shares) at Dec. 31, 2022					14,892,129
Exercise of stock options	300							300
Exercise of stock options (in Shares)					107,100
Common stock issued pursuant to short-term debt conversion	3,358							3,510					(152)
Common stock issued pursuant to short-term debt conversion, in shares					365,612
Issuance of common stock (in Shares)					13,296	169,492	938,183
Issuance of common stock	136	$ 1,000	$ 8,931					136	$ 1,000	$ 8,931
Vesting of restricted stock units, in shares					25,339
Tax withholding on vesting of restricted stock units, in shares					(8,110)
Tax withholding on vesting of restricted stock units	(53)							(53)
Issuance of warrants on senior secured bridge loan	274							274
Stock-based compensation expense	3,988							3,988
Change in fair value of debt due to change in credit risk, net of tax	2,810												2,810
Net loss	(64,017)											(64,017)
Balance at Mar. 31, 2023	155,628				$ 1			862,473				(709,513)	$ 2,667
Balance (in Shares) at Mar. 31, 2023					16,503,041
Balance at Dec. 31, 2023	40,960				$ 2			882,749				(841,791)
Balance (in Shares) at Dec. 31, 2023					19,378,192
Issuance of common stock to Yorkville for debt extension and SEPA commitment fee	317							317
Issuance of common stock to Yorkville for debt extension and SEPA commitment fee, in shares					116,964
Issuance and modification of warrants to RWI and C.V. Starr				$ 3,322							$ 3,322
Reclassification of previously exercised stock options, in shares					233,361
Issuance of common stock (in Shares)							214,109
Issuance of common stock			$ 6,000							$ 6,000
Tax withholding on vesting of restricted stock units, in shares					(80,672)
Tax withholding on vesting of restricted stock units	(357)							(357)
Issuance of common stock to Palantir as consideration for settlement agreement	50							50
Issuance of common stock to Palantir as consideration for settlement agreement, in shares					20,000
Retirement of shares in connection with reverse stock split, in shares					(191)
Stock-based compensation expense	2,966							2,966
Net loss	(22,013)											(22,013)
Balance at Mar. 31, 2024	$ 31,245				$ 2			$ 895,047				$ (863,804)
Balance (in Shares) at Mar. 31, 2024					21,808,752