Quarterly report pursuant to Section 13 or 15(d)

Acquisitions - Additional Information (Details)

v3.21.2
Acquisitions - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Apr. 06, 2021
Jan. 11, 2021
Sep. 30, 2021
Sep. 30, 2021
Dec. 31, 2020
Business Acquisition [Line Items]          
Goodwill     $ 4,880 $ 4,880 $ 0
Contractual Agreement Assets [Member]          
Business Acquisition [Line Items]          
Estimated fair value of contractual agreement asset   $ 49,500      
Discount rate   0.250      
Research And Development Expense [Member]          
Business Acquisition [Line Items]          
Business Combination, Contingent Consideration, Asset $ 5,000        
Series C Redeemable Convertible Preferred Stock [Member]          
Business Acquisition [Line Items]          
Stock issued during period, shares, acquisitions 2,677,200 8,924,009      
Uber Elevate [Member]          
Business Acquisition [Line Items]          
Business combination, share price   $ 8.70      
Business combination, consideration transferred   $ 77,600      
Non cash compensation expense   7,500 2,000 5,800  
Debt conversion converted instrument amount   $ 75,000      
Derivative, Fixed Interest Rate   5.00%      
Debt converted into common stock   7,716,780      
Accrued and unpaid interest on the debt   $ 2,200      
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value   $ 20,000      
Business Combination Fair Return On Investments   35.00%      
Decrease in preliminary value percentage of intangible assets   0.230      
Preliminary value percentage of intangible assets   0.370      
Goodwill   $ 4,900      
Uber Elevate [Member] | Contractual Agreement Assets [Member]          
Business Acquisition [Line Items]          
Business Combination, Acquired Receivable, Fair Value   49,500      
Uber Elevate [Member] | Contractual Agreement Assets [Member] | Acquired Current Liabilities [Member]          
Business Acquisition [Line Items]          
Payment to acquire research and development of assets in process $ 100        
Uber Elevate [Member] | Contractual Agreement Assets [Member] | Acquired Current Assets [Member]          
Business Acquisition [Line Items]          
Payment to acquire research and development of assets in process $ 100        
Uber Elevate [Member] | Uber CPN [Member]          
Business Acquisition [Line Items]          
Debt conversion converted instrument amount   $ 75,000      
Derivative, Fixed Interest Rate   5.00%      
Debt instrument, unamortized discount   $ 500      
Net redemptions of public stockholders   500      
Uber Elevate [Member] | Uber CPN [Member] | Maximum [Member]          
Business Acquisition [Line Items]          
Debt Instrument Fair Value   $ 74,500      
Uber Elevate [Member] | Research And Development Expense [Member]          
Business Acquisition [Line Items]          
Non cash compensation expense     1,800 5,200  
Uber Elevate [Member] | Selling, General and Administrative Expenses [Member]          
Business Acquisition [Line Items]          
Non cash compensation expense     $ 200 $ 600  
Uber Elevate [Member] | Series C Redeemable Convertible Preferred Stock [Member]          
Business Acquisition [Line Items]          
Stock issued during period, shares, acquisitions       8,924,009  
Business combination, share price     $ 8.70 $ 8.70  
Debt instrument, term   2 years      
Share-based compensation arrangement award vesting period 6 years        
Uber Elevate [Member] | Series C Redeemable Convertible Preferred Stock [Member] | Contractual Agreement Assets [Member]          
Business Acquisition [Line Items]          
Cash payments $ 5,000        
Fair value of aggregate with business acquisitions 23,900        
Share based compensation $ 23,900