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v3.20.2

Long-term debt (Details) $ in Millions | 9 Months Ended
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Sep. 30, 2020 USD ($)
Debt Instrument [Line Items] |
Borrowing option to prepay subject to minimum debt outstanding | $ 5.0
End term charge rate | 5.00%
Additional interest rate event of default | 5.00%
Prepayment occurs in first year |
Debt Instrument [Line Items] |
Prepayment rate | 2.00%
Prepayment occurs in second year |
Debt Instrument [Line Items] |
Prepayment rate | 1.50%
Prepayment occurs in after year two |
Debt Instrument [Line Items] |
Prepayment rate | 1.00%
Prime Rate |
Debt Instrument [Line Items] |
Debt instrument stated percentage | 8.85%
Basis spread variable rate | 5.60%
Initial Term Loan |
Debt Instrument [Line Items] |
Fees and transaction costs | $ 0.6
Debt instrument effective percentage | 12.10%
Loan and Security Agreement | Term Loan |
Debt Instrument [Line Items] |
Maximum borrowing | $ 40.0
Loan and Security Agreement | Initial Term Loan |
Debt Instrument [Line Items] |
Term loan | 15.0
Loan and Security Agreement | Additional Term Loan One |
Debt Instrument [Line Items] |
Term loan | 15.0
Loan and Security Agreement | Additional Term Loan Two |
Debt Instrument [Line Items] |
Term loan | $ 10.0

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