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Financing Arrangements - Long term debt and the unamortized discount (Detail) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
May 31, 2021
Outstanding principal amount $ 32,000 $ 27,000  
Add: accreted liability of final payment fee 188 125  
Less: unamortized debt discount, long term (1,421) (1,618) $ (2,800)
Less: current portion of long term debt principal (3,089) (1,291)  
Debt - net of current portion 27,678 24,216  
Current portion of long term debt - principal 3,089 1,291  
Less: current portion of unamortized debt discount (724) (716)  
Debt—current portion $ 2,365 $ 575