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Face (par) amount of debt instrument at time of issuance.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The cash outflow for cost incurred directly with the issuance of an equity security.

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The cash inflow from the additional capital contribution to the entity.

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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Number of new stock issued during the period.

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Nature of the business and basis of presentation- Liquidity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Sep. 30, 2020
Offering expenses	$ 1,800
Net loss	16,191	$ 11,324
Accumulated deficit	$ 167,751		$ 151,560
At the market offering
Shares issued (in shares)	5,287,298
Gross proceeds before discounts and commissions	$ 110,600
Net proceeds	106,900
Offering expenses	$ 3,700
Loan and Security Agreement \| Term Loan
Maximum borrowing				$ 40,000
Loan and Security Agreement \| Initial Term Loan
Term loan				15,000
Loan and Security Agreement \| Additional Term Loan One
Term loan				15,000
Loan and Security Agreement \| Additional Term Loan Two
Term loan				$ 10,000