Investments - Additional Information (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2021	May 02, 2023	Dec. 31, 2022	Nov. 02, 2022	Oct. 28, 2022	Sep. 09, 2022	Jul. 29, 2022	Jul. 28, 2022	Jun. 30, 2022	Feb. 01, 2022
Debt instrument principal amount	$ 298,382
Annual interest rate							7.00%
Debt instrument amount funded for transaction	1,666,667
Part of transaction purchased, amount	$ 3,333,333
Unrealized gain on convertible debt security		$ 288,320
Common stock, par value	$ 0.001				$ 0.001
Note payable - short-term (Note 6)	$ 298,382				$ 475,775
Trading price	$ 12.00
LMFA Sponsor LLC [Member]
Purchased aggregate of private placement warrants	5,738,000
LMFA Sponsor LLC [Member] | Private Placement Warrants [Member]
Unrealized gain on convertible debt security	$ 26,000	$ 1,000,000.0
BORQS Technologies [Member]
Marketable securities shares sold		4,895,894
Proceeds from sale marketable securities		$ 1,400,000
Realized net gain (loss) related to sale of securities		(395,000)
Symbiont IO [Member]
Accrued interest income on debt securities	347,000				347,000
Common stock, par value			$ 3.0642
Investment expiry date			Dec. 01, 2026
Reserve amount reducing the asset aquired for liability					1,100,000
Accrued reimbursement of legal fees	$ 55,000				$ 55,000
Warrants to purchase shares of common stock			700,000
Symbiont IO [Member] | ROFR Agreement {Member]
Annual interest rate	16.00%
Note payable - short-term (Note 6)	$ 2,000,000
Investment maturity date					Dec. 01, 2021
LMF Acquisition Opportunities Inc [Member] | Class A Common Stock [Member]
Converted common stock	one-for-one
Common stock, par value									$ 0.10
Seastar Medical Corporation [Member]
Merger related description	As part of the merger, Sponsor agreed that it will not transfer its shares of Seastar 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.
Percentage of ownership, common shares	14.00%
Seastar Medical Corporation [Member] | LMF Acquisition Opportunities Inc [Member]
Minority interest	30.00%
Seastar Medical Corporation [Member] | Class A Common Stock [Member]
Percentage of common stock hold by sponsors	20.00%
Shares holds by sponsor	2,587,500
Seastar Medical Corporation [Member] | Class A Common Stock [Member] | Stock Warrants [Member]
Private warrants hold by sponsors	5,738,000
Seastar Medical Corporation [Member] | Class B Common Stock [Member]
Shares holds by sponsor	2,587,500
Subsequent Event [Member] | Symbiont IO [Member]
Asset Acquired For Liability				$ 2,600,000
Asset acquired for liability in sale				$ 2,600,000
Convertible Debt Securities [Member]
Accrued interest income on debt securities		17,753
Short-term Investments [Member]
Unrealized gain on convertible debt security		$ 288,320
Short-term Investments [Member] | Convertible Debt Securities [Member]
Marketable securities shares sold		4,895,894
Realized loss on convertible debt securities	$ (395,000)
Remaining Convertible debt with Accrued Interest income	$ 965,096
Common stock, par value	$ 0.25
Short-term Investments [Member] | Convertible Debt Securities [Member] | Remaining Borqs Convertible Note Plus Accrued Interest
Converted common stock	3,863,200
Seastar Medical [Member]
Purchased aggregate of private placement warrants	5,738,000
Gain or loss on equity investment in unconsolidated subsidiary	$ 5,796,000	$ 37,000
Seastar Medical [Member] | Notes Receivable
Agreed amount of advances	0				$ 268,000	$ 268,000
Due from Related Parties, Total	0				12,000
Seastar Medical [Member] | Credit Agreement [Member]
Repayments received from related party	273,000
Principal amount of notes receivable	427,000				700,000
Percentage of interest rate on advances							7.00%	15.00%
Accrued interest income on debt securities	30,000				19,000
Amount loaned under credit agreement					700,000
Investment maturity date							Oct. 30, 2023
Seastar Medical [Member] | Maximum [Member] | Credit Agreement [Member]
Agreed amount of advances								$ 700,000
LMF Acquisition Opportunities Inc [Member]
Debt instrument principal amount	5,000,000
Senior notes	$ 20,000,000
Debt instrument maturity month and year	2023-02
Annual interest rate	8.00%
Debt instrument discount rate percentage	10.00%
Debt instrument warrant coverage rate	90.00%
Debt instrument convertible conversion price rate	110.00%
Stock issued for warrants exercised, shares	2,922,078
Unsecured Promissory Note [Member]
Debt instrument principal amount										$ 1,750,000		$ 500,000
Unsecured Promissory Note [Member] | LMF Acquisition Opportunities Inc [Member]
Principal amount of notes receivable									$ 1,035,000
Aggregate amount deposited in trust account									$ 1,035,000
Original Sponsor Notes [Member] | LMF Acquisition Opportunities Inc [Member]
Principal amount of notes receivable											$ 1,750,000
Sponsor Notes [Member] | LMF Acquisition Opportunities Inc [Member]
Principal amount of notes receivable							$ 2,785,000
Sponsor Notes [Member] | Seastar Medical [Member]
Repayments received from related party	$ 1,104,000
Principal amount of notes receivable	1,681,000				2,785,000
Accrued interest income on debt securities	$ 79,000				$ 35,000