Nature of business and summary of significant accounting policies, Accounts receivable and allowance for doubtful accounts (FY) (Details) - USD ($) $ in Millions |
Mar. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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Accounts receivable and allowance for doubtful accounts [Abstract] | |||
Allowance for doubtful accounts | $ 0.0 | ||
Maximum [Member] | |||
Accounts receivable and allowance for doubtful accounts [Abstract] | |||
Allowance for doubtful accounts | $ 0.1 | $ 0.1 |
X | ||||||||||
- References No definition available.
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X | ||||||||||
- Definition Amount of allowance for credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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X | ||||||||||
- Details
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