Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024
Pay vs Performance Disclosure
Net Income (Loss)	$ (49,652)	$ (62,214)	$ (102,854)	$ (108,483)	$ (111,866)	$ (211,337)

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details

Sage Therapeutics, Inc. 10-Q