Better Choice Company Inc. General form of registration statement for all companies including face-amount certificate companies

Employee benefit plans (FY) (Details)	12 Months Ended
Employee benefit plans (FY) (Details)	Dec. 31, 2020 USD ($) plan	Dec. 31, 2019 USD ($)
Retirement Benefits [Abstract]
Number of qualified defined contribution 401(k) plans \| plan	2
Contributions expense \| $	$ 200,000	$ 100,000

Amount of contribution received by defined benefit plan from employer which increases plan assets.