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Line of Credit (Details)
$ in Millions
1 Months Ended 3 Months Ended
May 31, 2015
USD ($)
Mar. 31, 2020
USD ($)
Nov. 30, 2017
USD ($)
Line Of Credit Facility [Line Items]      
Revolving line of credit, maximum borrowing capacity   $ 20.0  
Adjusted quick ratio   1.25  
Borrowing capacity     $ 15.5
Prime rate      
Line Of Credit Facility [Line Items]      
Revolving line of credit, basis spread over applicable rate on default   5.00%  
Revolving line of credit      
Line Of Credit Facility [Line Items]      
Bank guarantee to customer     $ 3.0
Letter of credit      
Line Of Credit Facility [Line Items]      
Amount drawn from revolving line of credit $ 1.5