General form of registration statement for all companies including face-amount certificate companies

Summary Of Significant Accounting Policies - Additional Information (Detail)

v3.21.2
Summary Of Significant Accounting Policies - Additional Information (Detail) - USD ($)
 6 Months Ended 12 Months Ended
Jan. 01, 2020
Jan. 01, 2019
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Advertising costs         $ 500,000 $ 200,000
Contract with Customer, Asset     $ 2,649,000   3,796,000  
Revenues     14,659,000 $ 9,411,000 21,135,000 $ 13,713,000
Revenue recognized from performance obligations satisfied over time     0   $ 0  
Treasury Stock, Shares, Acquired         0 0
Preferred Stock, Convertible, Shares Issuable         0 0
Accounts Receivable, Allowance for Credit Loss, Current     0 0 $ 0 $ 0
Deferred Offering Costs     7,100,000   0  
Revision of Prior Period, Error Correction, Adjustment [Member]            
Increase decrease in stock-based compensation expense     600,000 14,900 3,000.0 100,000
Increase decrease In additional paid in capital and accumulated deficit $ 500,000 $ 400,000 55,900 600,000 $ 500,000 $ 500,000
Increase decrease in selling, general and administrative expenses       1,700,000    
Increase decrease in interest expense       300,000    
Increase decrease in gain on discontinued operations       1,400,000    
Maximum [Member]            
Equity Method Investment, Ownership Percentage         50.00%  
Minimum [Member]            
Equity Method Investment, Ownership Percentage         20.00%  
Gen3 satellites [Member]            
Revenues     $ 300,000   $ 1,500,000  
Estimated contract losses       $ 3,300,000 6,600,000  
Current Asset Member [Member]            
Contract with Customer, Asset         $ 300,000  
Two Thousand Stock Incentive Plan [Member]            
Number of shares authorized for issuance under share-based payment arrangement.     1,608,800      
Two Thousand Stock Incentive Plan [Member] | Share-based Payment Arrangement, Option [Member]            
Number of shares authorized for issuance under share-based payment arrangement.         98,253,287  
Two Thousand Fourteen Stock incentive plan [Member]            
Number of shares authorized for issuance under share-based payment arrangement.     188,253,287   1,608,800  
Osprey Technology Acquisition Corp [Member]            
Federal depository insurance coverage     $ 250,000   $ 250,000  
Revenues     $ 0   $ 0  
IPO And Private Placement [Member] | Osprey Technology Acquisition Corp [Member]            
Class of warrants to purchase common stock         24,137,500