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

Line of credit, short term loan and notes payable, Notes Payable (FY) (Details)

v3.20.4

Line of credit, short term loan and notes payable, Notes Payable (FY) (Details) - USD ($)		3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 19, 2019	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Jun. 24, 2020	Jun. 23, 2020	Nov. 04, 2019
Debt Instruments [Abstract]
Debt amount, net of debt discounts						$ 37,250,000	$ 6,200,000
Interest expense		$ 2,600,000	$ 100,000	$ 7,300,000	$ 100,000	$ 670,000	868,000
November 2019 Notes Payable, Net (November 2019 Notes) [Member]
Debt Instruments [Abstract]
Face amount										$ 2,800,000
Long-term debt, interest rate		10.00%		10.00%		10.00%				10.00%
Maturity date						Nov. 04, 2021
Conversion price (in dollars per share)								$ 3.75	$ 4.00	$ 4.00
Debt amount, net of debt discounts		$ 2,736,000		$ 2,736,000		$ 2,769,000
Debt discounts		300,000		300,000		100,000
Fair value of debt		300,000		300,000		2,800,000
November 2019 Notes Payable, Net (November 2019 Notes) [Member] \| Maximum [Member]
Debt Instruments [Abstract]
Fair value of incremental warrants issued										$ 100,000
Debt amount, net of debt discounts						2,800,000
Debt discounts						$ 100,000
Seller Notes [Member]
Debt Instruments [Abstract]
Long-term debt, interest rate	10.00%
Maturity date	Jun. 30, 2023
Conversion price (in dollars per share)	$ 4.00							$ 3.75	$ 4.00
Fair value of debt		$ 300,000		$ 300,000
Senior Seller Notes [Member]
Debt Instruments [Abstract]
Face amount	$ 10,000,000
Long-term debt, interest rate		10.00%		10.00%		10.00%
Maturity date						Jun. 30, 2023
Debt amount, net of debt discounts		$ 9,993,000		$ 9,993,000		$ 9,191,000	$ 0
Debt discounts		$ 900,000		$ 900,000		900,000
Fair value of debt						$ 9,200,000
Junior Seller Notes [Member]
Debt Instruments [Abstract]
Face amount	$ 5,000,000
Long-term debt, interest rate		10.00%		10.00%		10.00%
Maturity date						Jun. 30, 2023
Debt amount, net of debt discounts		$ 4,797,000		$ 4,797,000		$ 4,410,000
Debt discounts		$ 600,000		$ 600,000		500,000
Fair value of debt						$ 4,400,000

- Definition

Fair value of incremental warrants issued carried under the fair value option.

+ References

No definition available.

+ Details

Name:	senz_FairValueOfIncrementalWarrantsIssued
Namespace Prefix:	senz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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-Name Accounting Standards Codification
-Topic 210
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-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

+ References

+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

+ References

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-Publisher FASB
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-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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+ Details

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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- Details

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- Details

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Period Type:

- Details

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- Details

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