Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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Period Type:	duration

Long-term debt - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Oct. 01, 2020	Dec. 31, 2020	Dec. 31, 2019
Shares issued		$ 48,144	$ 56,381
Hercules
Shares issued		$ 2,000
At the market offering
Shares issued (in shares)		2,928,813
Net proceeds		$ 48,100
At the market offering \| Hercules \| Sales Agreement
Shares issued (in shares)	98,100
Share issue price	$ 19.05
Net proceeds	$ 1,800