Nature of the Business - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands				12 Months Ended
	Mar. 09, 2026	Feb. 19, 2025	Jan. 11, 2024	Dec. 31, 2025	Dec. 31, 2024
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Warrants exercised				0	0
Net losses				$ 174,325	$ 124,697
Accumulated deficit				957,775	783,450
Net cash used in operating activities				156,289	$ 100,012
Cash, cash equivalents and available-for-sale securities				187,900
Restricted cash				$ 2,000
Private Placement [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Net proceeds from private placement			$ 103,700
At-the-Market Offering Sales Agreement [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Common stock shares issued				1,189,572
Proceeds from issuance of common stock				$ 6,800
February 2025 Offering [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Net proceeds from offering		$ 188,000
March 2026 Private Placement [Member] \| Subsequent Event [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Net proceeds from offering	$ 226,400
Common Stock [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Common stock shares issued				35,739,810
Common Stock [Member] \| Private Placement [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Common stock shares issued			16,973,103		16,973,103
Common stock issued price per share			$ 5.53
Common Stock [Member] \| February 2025 Offering [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Common stock shares issued		35,739,810
Common stock issued price per share		$ 4.03
Common Stock [Member] \| March 2026 Private Placement [Member] \| Subsequent Event [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Common stock shares issued	14,973,257
Common stock issued price per share	$ 5.61
Pre-Funded Warrants [Member] \| Private Placement [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Pre-funded warrants to purchase shares of common stock			2,712,478
Common stock warrants price per share			$ 5.529
Pre-Funded Warrants [Member] \| February 2025 Offering [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Pre-funded warrants to purchase shares of common stock		13,888,340
Common stock warrants price per share		$ 4.029
Pre-Funded Warrants [Member] \| March 2026 Private Placement [Member] \| Subsequent Event [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Pre-funded warrants to purchase shares of common stock	27,807,482
Common stock warrants price per share	$ 5.609

Solid Biosciences Inc. 10-K