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Condensed Consolidated Statements of Operations - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Revenues $ 222,608 $ 78,696 $ 33,942
Cost of revenues 126,031 42,362 16,590
Gross margin 96,577 36,334 17,352
Operating costs and expenses:      
Selling, general and administrative 97,563 56,860 31,286
Engineering and development 16,843 9,484 3,741
Total operating costs and expenses 114,406 66,344 35,027
Loss from operations (17,829) (30,010) (17,675)
Other income (expense):      
Investment income 3,253 761 583
Interest expense (4,689) (2,560) (1,367)
Loss on debt extinguishment (251,754) 0 0
Other income (expense), net (2,823) (929) 189
Total other expense, net (256,013) (2,728) (595)
Loss before provision for income taxes (273,842) (32,738) (18,270)
(Provision for) benefit from income taxes (1,686) 45 (62)
Net loss (275,528) (32,693) (18,332)
Deemed dividend on Series C convertible preferred stock   (39,492)  
Paid-in-kind dividend on Series C convertible preferred stock (8,196) (2,844)  
Net loss attributable to common stockholders $ (283,724) $ (75,029) $ (18,332)
Net loss per share attributable to common stockholders - basic $ (6.18) $ (1.94) $ (0.55)
Net loss per share attributable to common stockholders - diluted $ (6.19) $ (1.94) $ (0.55)
Weighted average common shares outstanding - basic 45,927,591 38,582,432 33,394,285
Weighted average common shares outstanding - diluted 45,927,591 38,582,432 33,394,285
Service [Member]      
Revenues $ 119,065 $ 55,299 $ 33,942
Cost of revenues 69,297 29,521 $ 16,590
Product [Member]      
Revenues 103,543 23,397  
Cost of revenues $ 56,734 $ 12,841