Long-term Investments - Additional Information (Details) - USD ($)				12 Months Ended
	Oct. 28, 2022	Dec. 01, 2021	Jan. 28, 2021	Dec. 31, 2022	Dec. 31, 2021	Jul. 29, 2022	Oct. 31, 2018	Apr. 02, 2018
Long term investments [Line Items]
Note payable - short-term				$ 475,775	$ 114,688
Debt Instrument Interest Rate Stated Percentage	7.00%
Cash				4,238,006	32,559,185
Unrealized loss on debt securities					407,992
Unrealized gain (loss) on investment in affiliate				$ 4,423,985	$ 886,543
Common stock, par value				$ 0.001	$ 0.001
Common stock, shares issued				13,091,883	13,017,943
Gross proceeds from common stock issuance					$ 31,456,374
Trading price					$ 12.00
Stock Warrants [Member]
Long term investments [Line Items]
Warrant Exercise Price							$ 1.70	$ 33.03
IPO [Member]
Long term investments [Line Items]
Percentage of sponsors initial risk			69.50%
Proceeds from issuance initial public offering			$ 103,500,000
IPO [Member] | Stock Warrants [Member]
Long term investments [Line Items]
Private warrants hold by sponsors			5,738,000
Symbiont.IO [Member]
Long term investments [Line Items]
Cash				$ 300,000
Asset acquiring for liability				2,400,000
Reserve amount reducing the asset aquired for liability				1,100,000
Accrued interest income				347,000	$ 27,000
Accrued reimbursement of legal fees				55,000	0
Loan amount					$ 2,000,000.0
Number of warrants issued					700,000
Investment expiry date					Dec. 01, 2026
Common stock, par value					$ 3.0642
LMF Acquisition Opportunities Inc [Member] | Private Placement Warrants [Member] | Stock Warrants [Member]
Long term investments [Line Items]
Warrant Exercise Price			$ 1.00
Proceeds from issuance of private placement			$ 5,738,000
Seastar Medical Holding Corporation [Member]
Long term investments [Line Items]
Gain or loss on equity investment in unconsolidated subsidiary				$ 5,900,000	$ 4,700,000
Trading price				$ 4.10
SeaStar Medical Corporation [Member]
Long term investments [Line Items]
Percentage of ownership, common shares				14.00%
Merger related description				As part of the merger, Sponsor agreed that it will not transfer its shares of ICU Common Stock until the date that is the earlier of (1) the twelve month anniversary of the closing of the merger and (2) the last sale price of the Common Stock equals or exceeds $12.00 per share (as adjusted for stock splits, stock dividends, reorganizations, recapitalizations and the like) for any 20 trading days within any 30-trading day period commencing at least 150 days after the close of the merger.
SeaStar Medical Corporation [Member] | LMF Acquisition Opportunities Inc [Member]
Long term investments [Line Items]
Minority interest				30.00%
Class B Shares And Warrants [Member] | LMF Acquisition Opportunities Inc [Member]
Long term investments [Line Items]
Value of shares under acquisition				$ 25,000
Common stock, par value				$ 0.0001
Investments in affiliates shares				5,738,000
Warrant Exercise Price				$ 11.50
Common Stock And Warrants [Member]
Long term investments [Line Items]
Unrealized gain (loss) on investment in affiliate				$ 4,400,000	900,000
ROFR Agreement {Member] | Symbiont.IO [Member]
Long term investments [Line Items]
Investment maturity date				Dec. 01, 2021
Drawn amount		$ 2,000,000.0
Debt Instrument Interest Rate Stated Percentage				16.00%
ROFR Agreement {Member] | Maximum [Member] | Symbiont.IO [Member]
Long term investments [Line Items]
Note payable - short-term		$ 3,000,000.0
Class A Common Stock [Member] | LMF Acquisition Opportunities Inc [Member]
Long term investments [Line Items]
Common stock, par value	$ 0.0001					$ 0.10
Common Stock, Conversion Basis	one-to-one
Class A Common Stock [Member] | LMF Acquisition Opportunities Inc [Member] | IPO [Member]
Long term investments [Line Items]
Common stock, par value			$ 10.00
Common stock, shares issued			10,350,000
Gross proceeds from common stock issuance			$ 103,500,000
Class A Common Stock [Member] | SeaStar Medical Corporation [Member]
Long term investments [Line Items]
Percentage of common stock hold by sponsors				20.00%
Shares Holds by Sponsor				2,587,500
Class A Common Stock [Member] | SeaStar Medical Corporation [Member] | Stock Warrants [Member]
Long term investments [Line Items]
Private warrants hold by sponsors				5,738,000
Class B Common Stock [Member] | LMF Acquisition Opportunities Inc [Member]
Long term investments [Line Items]
Common stock, par value	$ 0.0001
Class A And Class B Common Shares [Member] | IPO [Member]
Long term investments [Line Items]
Percentage of common stock hold by sponsors			20.00%
LMFA Sponser LLC [Member]
Long term investments [Line Items]
Purchased aggregate of private placement warrants				5,738,000
Investment warrants exercise price				$ 1.00
LMFA Sponser LLC [Member] | Private Placement Warrants [Member]
Long term investments [Line Items]
Unrealized loss on debt securities				$ 1,500,000	$ 3,800,000
LMFA Sponser LLC [Member] | Class A Common Stock [Member]
Long term investments [Line Items]
Investment warrants exercise price				$ 11.50