Stockholders' Equity (Capital Raises) (Narrative) (Details)

v3.24.3

Stockholders' Equity (Capital Raises) (Narrative) (Details) - USD ($)						1 Months Ended						9 Months Ended
	Jun. 12, 2024	Jan. 05, 2024	May 05, 2023	Dec. 30, 2022	Apr. 23, 2021	Sep. 30, 2024	Jul. 31, 2024	Jun. 30, 2024	May 31, 2024	Apr. 30, 2024	Jan. 31, 2024	Sep. 30, 2024	Sep. 30, 2023	Jan. 09, 2024	Dec. 31, 2023	Nov. 02, 2023	Oct. 11, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued				4,900,000
Gross proceeds						$ 7,400,000
Common Stock, par value				$ 0.0001		$ 0.001						$ 0.001			$ 0.001
Warrants exercised, Number of shares												(17,500)
Sale of stock, net proceeds				$ 150,000,000.0
Exercise of warrants for cash												$ 30,000	$ 0
November 2023 Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants						1.65						$ 1.65
Unit Price Per Share						$ 1.70						$ 1.70
Number of warrants issued						5,885,000						5,885,000
Private Placement Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants						$ 1.84						$ 1.84
Concurrent Private Placement Warrants | Chief Executive Officer (Dr. Rosenwald)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued						763,359
Shares issued, price per share						$ 1.84						$ 1.84
Avenue
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants to purchase shares										689,680
Exercise price of warrants										$ 6.20							$ 116.25
Avenue | Series A Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, price per share																$ 22.545
Avenue | Series B Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, price per share														$ 22.545
Avenue | Unregistered warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants to purchase shares										1,379,360
Stock offering, price per share										$ 0.125
Exercise price of warrants										$ 6.20
Net proceeds									$ 3,900,000	$ 3,700,000
Fair value of warrants										$ 4,500,000
Maximum | Private Placement Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares called by warrants						3,939,394						3,939,394
Warrant expiration term						5 years 6 months						5 years 6 months
Maximum | Concurrent Private Placement Warrants | Chief Executive Officer (Dr. Rosenwald)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares called by warrants						763,359						763,359
Warrant expiration term						5 years 6 months						5 years 6 months
Maximum | Avenue
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrant expiration term										5 years
Minimum | Private Placement Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrant expiration term						6 months						6 months
Minimum | Concurrent Private Placement Warrants | Chief Executive Officer (Dr. Rosenwald)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrant expiration term						6 months						6 months
Minimum | Avenue
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrant expiration term										18 months
At the Market Offering
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued												1,800,000	200,000
Stock offering, price per share						$ 1.95						$ 1.95	$ 9.61
Stock offering, gross proceeds												$ 3,500,000	$ 2,200,000
At the Market Offering | Journey
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued												300,000
Number of Shares issuable for At-the-Market offering												3.8
Stock offering, gross proceeds												$ 1,700,000
At the Market Offering | Checkpoint | Founders Agreement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued												340,246
Shares issued (in percent)												2.50%
At the Market Offering | Avenue | Founders Agreement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued												25,567
Number of shares available for future issuance						4,023						4,023
At the Market Offering | Avenue | Unregistered warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants to purchase shares						245,617						245,617
Net proceeds												$ 900,000
Public Offering | Mustang
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued									1,160,000
Number of warrants to purchase shares									50,632,914
Stock offering, price per share									$ 0.237
Exercise price of warrants									$ 0.237
Warrants exercised, Number of shares									15,717,638
Exercise of warrants for cash									$ 3,200,000
Public Offering | Mustang | Series A One Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrant expiration term									5 years
Public Offering | Mustang | Series A Two Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrant expiration term									24 months
Public Offering | Mustang | Series A Three Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrant expiration term									9 months
Public Offering | Mustang | Amended Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants to purchase shares									2,588,236
Stock offering, price per share									$ 1.58
Exercise price of warrants									$ 0.237
Warrant expiration term									5 years
Public Offering | Mustang | Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued									16,877,638
Shelf Registration 2020 Statement | Checkpoint
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount available for future stock offerings						$ 0						0
Shelf Registration 2023 Statement | Checkpoint
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount available for future stock offerings						65,700,000						65,700,000
Shelf Registration 2023 Statement | Maximum | Checkpoint
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, aggregate offering permitted by the agreement			$ 150,000,000
Shelf Registration 2024 Statement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount available for future stock offerings						43,500,000						43,500,000
Shelf Registration 2024 Statement | Mustang
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, aggregate offering permitted by the agreement												36,300,000
Shelf Registration 2024 Statement | Maximum | Mustang
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, aggregate offering permitted by the agreement	$ 40,000,000.0
Shelf Registration 2021 Statement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount available for future stock offerings						0						$ 0
Shelf Registration 2021 Statement | Mustang
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued												2,700,000
Stock offering, aggregate offering permitted by the agreement					$ 200,000,000.0							$ 4,400,000
Sale of stock, net proceeds												1,200,000
Shelf Registration 2021 Statement | Avenue
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount available for future stock offerings						$ 24,100,000						$ 24,100,000
Direct offering
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued						3,939,394					3,303,305
Shares issued, price per share						$ 1.65						$ 1.65
Exercise price of warrants											$ 3.21
Unit Price Per Share											$ 3.33
Warrant expiration term											5 years
Sale of stock, net proceeds											$ 10,200,000
Direct offering | Checkpoint
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common shares - Registered direct offering							1,230,000				1,275,000
Stock offering, price per share							$ 2.05				$ 1.805
Sale of stock, net proceeds							$ 11,000,000.0				$ 12,600,000
Direct offering | Checkpoint | Common Stock Warrant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants							$ 2.05				$ 1.68
Warrant expiration term							5 years				5 years
Direct offering | Checkpoint | Pre funded warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants issued							4,623,659				6,481,233
Number of shares called by warrants											1
Stock offering, price per share							$ 2.0499				$ 1.8049
Exercise price of warrants											0.0001
Direct offering | Checkpoint | Placement Agent Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares called by warrants							351,220
Exercise price of warrants							$ 2.5625				$ 2.2563
Direct offering | Mustang
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock offering, number of shares issued								3,025,000				641,740
Number of warrants to purchase shares								3,105,000
Stock offering, price per share								$ 0.4099
Per share amount reduced from share price to calculate warrant price								0.001
Exercise price of warrants								$ 0.001
Warrant expiration term								5 years
Warrants exercised, Number of shares								3,105,000
Sale of stock, net proceeds								$ 2,100,000
Shares issued (in percent)								2.50%
Direct offering | Mustang | Unregistered warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants to purchase shares								6,130,000
Exercise price of warrants								$ 0.41
Direct offering | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants to purchase shares											3,303,305
Direct offering | Maximum | Checkpoint
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares called by warrants							5,853,659
Number of warrants to purchase shares											7,756,233
Direct offering | Maximum | Checkpoint | Placement Agent Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants to purchase shares											465,374
Private Placement | Avenue
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise of warrants for cash		$ 4,500,000
Private Placement | Avenue | Series A Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants to purchase shares		220,538
Private Placement | Avenue | Series B Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants to purchase shares		220,538
Private Placement | Avenue | January 2023 Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants to purchase shares		25,871
Exercise price of warrants		$ 116.25
Exercise price of warrants agreed by investor		$ 22.545
Fair value of warrants						$ 600,000						$ 600,000
Private Placement | Avenue | November 2023 Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants to purchase shares		194,667
Exercise price of warrants		$ 22.545
Exercise price of warrants agreed by investor		$ 22.545
Fair value of warrants						$ 4,300,000						$ 4,300,000
Concurrent Private Placement | Chief Executive Officer (Dr. Rosenwald)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued, price per share						$ 1.84						$ 1.84
Exercise price of warrants						$ 0.125						$ 0.125