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Business Combinations - Summary of Adjustments in Unaudited Pro Forma Combined Net Income (Loss) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Business Acquisition [Line Items]        
Net loss $ (3,069) $ (261) $ (5,441) $ (2,199)
Add: Results of operations of acquired business 0 (338) (310) 228
Less: pro forma adjustments        
Amortization of historical intangibles 0 26 0 73
Amortization of acquired intangibles (0) (583) (38) (1,800)
Inventory fair value adjustments 0 0 353 (353)
Interest income 0 0 (6) 0
Interest expense 0 16 0 63
Net loss - pro forma combined $ (3,069) $ (1,140) $ (5,442) $ (3,988)