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Long-term debt - Components of Long-term Debt (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Debt Instrument [Line Items]
Less: Unamortized discount	$ (1,335)
Long-term debt, net of discount	24,810
Notes payable
Debt Instrument [Line Items]
Long-term debt	25,000
Payment in kind interest
Debt Instrument [Line Items]
Long-term debt	$ 1,145

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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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.

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