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Subsequent Events - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended
Nov. 13, 2019
Nov. 07, 2019
Nov. 06, 2019
Sep. 30, 2019
LGL Systems Acquisition Holdings Company, LLC [Member]        
Subsequent Event [Line Items]        
Percentage of sponsorship owned       100.00%
SPAC [Member]        
Subsequent Event [Line Items]        
Percentage of sponsorship owned       100.00%
Subsequent Event [Member] | LGL Systems Acquisition Holdings Company, LLC [Member]        
Subsequent Event [Line Items]        
Warrant exercise/ strike price $ 11.50   $ 11.50  
Percentage of sponsorship owned     43.57%  
Number of restricted and non-tradeable shares held 4,312,500      
Class of warrants held 5,200,000      
Subsequent Event [Member] | LGL Systems Acquisition Holdings Company, LLC [Member] | SPAC [Member]        
Subsequent Event [Line Items]        
Percentage of sponsorship owned 20.00%      
Subsequent Event [Member] | LGL Systems Acquisition Holdings Company, LLC [Member] | Private Placement [Member]        
Subsequent Event [Line Items]        
Contribution to fund purchase of private warrants     $ 3,350  
Subsequent Event [Member] | SPAC [Member]        
Subsequent Event [Line Items]        
Amount raised through offering   $ 172,500    
Shares sold in the offering   17,250,000    
Subsequent Event [Member] | Common Stock [Member] | LGL Systems Acquisition Holdings Company, LLC [Member]        
Subsequent Event [Line Items]        
Warrant exercisable to purchase common stock     1