Preferred Stock and Stockholders' Equity - Schedule of Company's Outstanding Warrants to Purchase Shares of Common Stock (Detail) - Common Stock Warrants [Member] - $ / shares	Mar. 31, 2026	Dec. 31, 2025
Class of Warrant or Right [Line Items]
Number of Shares of Common Stock Issuable	51,781,090	51,781,090
2023 Securities Purchase Agreement Common Warrants [Member]
Class of Warrant or Right [Line Items]
Number of Shares of Common Stock Issuable	15,151,518
Warrants exercise price	$ 3
Expiration Date	May 05, 2028
January 2021 Pre-funded Warrants [Member]
Class of Warrant or Right [Line Items]
Number of Shares of Common Stock Issuable	509,117
Warrants exercise price	$ 0.001
Expiration Date	Dec. 31, 2030
2023 Securities Purchase Agreement Pre-funded Warrants [Member]
Class of Warrant or Right [Line Items]
Number of Shares of Common Stock Issuable	3,844,153
Warrants exercise price	$ 0.001
2024 Securities Purchase Agreement Pre-funded Warrants [Member]
Class of Warrant or Right [Line Items]
Number of Shares of Common Stock Issuable	7,989,516
Warrants exercise price	$ 0.001
2024 Underwritten Offering Pre-funded Warrants [Member]
Class of Warrant or Right [Line Items]
Number of Shares of Common Stock Issuable	4,931,507
Warrants exercise price	$ 0.001
2025 Underwritten Offering Pre-funded Warrants [Member]
Class of Warrant or Right [Line Items]
Number of Shares of Common Stock Issuable	15,151,515
Warrants exercise price	$ 0.001
2025 Warrant Exchange Agreement [Member]
Class of Warrant or Right [Line Items]
Number of Shares of Common Stock Issuable	4,203,764
Warrants exercise price	$ 0.001