Intangible assets, royalties and goodwill - Intangible assets (Q3) (Details) - USD ($) $ in Thousands |
9 Months Ended | 12 Months Ended | |
|---|---|---|---|
Sep. 30, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Intangible Assets [Abstract] | |||
| Estimated Useful Life | 10 years 3 months 18 days | 10 years | |
| Gross Carrying Amount | $ 14,690 | $ 14,690 | $ 0 |
| Accumulated Amortization | (1,194) | (49) | |
| Net Carrying Amount | $ 13,496 | $ 14,641 | 0 |
| Customer relationships | |||
| Intangible Assets [Abstract] | |||
| Estimated Useful Life | 7 years | 7 years | |
| Gross Carrying Amount | $ 7,500 | $ 7,500 | 0 |
| Accumulated Amortization | (848) | (35) | |
| Net Carrying Amount | $ 6,652 | $ 7,465 | |
| Trade name | |||
| Intangible Assets [Abstract] | |||
| Estimated Useful Life | 15 years | 15 years | |
| Gross Carrying Amount | $ 7,190 | $ 7,190 | $ 0 |
| Accumulated Amortization | (346) | (14) | |
| Net Carrying Amount | $ 6,844 | $ 7,176 |
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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