Warrants - Additional Information (Details) - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Warrants outstanding, intrinsic value	$ 0	$ 0

Amount by which the current fair value of the underlying stock exceeds the exercise price of warrants outstanding.

No definition available.

Name:	bttr_ClassOfWarrantOrRightWarrantsOutstandingIntrinsicValue
Namespace Prefix:	bttr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant