Subsequent events, Stock and Warrant Issuance (FY) (Details) - USD ($) $ / shares in Units, $ in Thousands |
1 Months Ended | 9 Months Ended | 12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|---|
Mar. 17, 2020 |
Jan. 03, 2020 |
Aug. 28, 2019 |
Jan. 08, 2019 |
Dec. 31, 2018 |
Sep. 30, 2020 |
Sep. 30, 2019 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Stock and Warrant Issuance [Abstract] | |||||||||
| Units issued in private placement offering (in shares) | 25,641 | 1,400,000 | |||||||
| Net proceeds from shares issued | $ 0 | $ 15,826 | $ 15,826 | $ 4,668 | |||||
| Stock issued to third parties for services (in shares) | 1,000,000 | ||||||||
| Granted (in dollars per share) | $ 0.97 | ||||||||
| Subsequent Event [Member] | |||||||||
| Stock and Warrant Issuance [Abstract] | |||||||||
| Units issued in private placement offering (in shares) | 308,642 | ||||||||
| Net proceeds from shares issued | $ 500 | ||||||||
| Net of issuance cost | $ 100 | ||||||||
| Stock issued to third parties for services (in shares) | 1,003,232 | ||||||||
| Granted (in dollars per share) | $ 1.62 | ||||||||
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The cash inflow from the additional capital contribution to the entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders. No definition available.
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| X | ||||||||||
- Definition Number of new stock issued during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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