Credit Facility and Term Loans - Schedule of Credit Facility and Term Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total MidCap Credit Facility		$ 12,190
Less-current portion		(21,600)
Term loan-non current portion	$ 25,454	36,483
MidCap Credit Facility
Debt Instrument [Line Items]
MidCap Credit Facility		12,905
Less: deferred debt issuance costs		(702)
Less: discount associated with issuance of warrants		(13)
Total MidCap Credit Facility		12,190
High Trail Loan December 2020 Note
Debt Instrument [Line Items]
High Trail Note		43,000
Less: deferred debt issuance costs		(2,207)
Less: discount associated with issuance of warrants		(9,839)
Less: discount associated with original issuance of loan		(4,692)
High Trail warrant		31,821
Total High Trail Note		58,083
Less-current portion		(21,600)
Term loan-non current portion		$ 36,483
High Trail April 2021 Note - Due 2023
Debt Instrument [Line Items]
Total High Trail Note	25,000
Derivative liability related to term loan	454
Total High Trail Note	$ 25,454

Derivative liability related to term loan.

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Discount associated with issuance of warrants.

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Discount associated with issuance of warrants current.

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Discount associated with original issuance of loan.

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Lines of credit gross current.

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Loans payable gross.

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Loans payable including derivative liability related to term loan.

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Long term loans related to warrant.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, after accumulated amortization, of debt issuance costs classified as current. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Including the current and noncurrent portions, aggregate carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

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Carrying value as of the balance sheet date of portion of long-term loans payable due within one year or the operating cycle if longer.

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Carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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