Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Details)

v3.20.1
Summary of Significant Accounting Policies - Additional Information (Details)
 12 Months Ended
Dec. 31, 2019
USD ($)
CreditFacility
Customer
Dec. 31, 2018
USD ($)
Customer
Dec. 31, 2017
USD ($)
Schedule Of Significant Accounting Policies [Line Items]      
Total current assets $ 86,502,000 $ 44,586,000  
Total current liabilities 125,946,000 54,631,000  
Net liabilities current 39,400,000    
Business combination transaction related costs 13,100,000    
Business combination, deferred consideration 15,000,000    
Obligations net under shares purchase forward agreements entered by former entity 13,200,000    
Business combination, notes payable acquired $ 3,600,000    
Number of new line of credit facilities | CreditFacility 2    
Revenue $ 129,558,000 77,845,000  
Number of performance obligations 1    
Subscription-based fee contractual period 1 year    
Contract assets $ 0    
Deferred revenue 1,397,000 1,500,000  
Deferred revenue recognized 1,500,000    
Marketable securities $ 5,100,000 3,200,000  
Recognized income tax positions greater than 50 percent    
Restricted Cash $ 20,900,000 0  
Allowance for doubtful accounts 873,000 157,000 $ 60,000
Goodwill impairment charges 0    
Impairment charges 0 0  
Sales and Marketing      
Schedule Of Significant Accounting Policies [Line Items]      
Advertising costs $ 956,000 $ 578,000  
Internal-use Software Development Costs      
Schedule Of Significant Accounting Policies [Line Items]      
Property and equipment, useful life 4 years    
Usage-Based Fees      
Schedule Of Significant Accounting Policies [Line Items]      
Performance obligation 98.00% 98.00%  
Term-Based Fees      
Schedule Of Significant Accounting Policies [Line Items]      
Performance obligation 2.00% 2.00%  
Customer Concentration Risk | Revenue      
Schedule Of Significant Accounting Policies [Line Items]      
Concentration risk percentage 10.00% 10.00%  
Number of customers | Customer 1 3  
Customer Concentration Risk | Trade Receivables      
Schedule Of Significant Accounting Policies [Line Items]      
Concentration risk percentage 10.00% 10.00%  
Number of customers | Customer 0 0  
Customer 1 | Customer Concentration Risk      
Schedule Of Significant Accounting Policies [Line Items]      
Revenue $ 13,400,000 $ 13,600,000  
Customer 2 | Customer Concentration Risk      
Schedule Of Significant Accounting Policies [Line Items]      
Revenue 10,900,000 8,100,000  
Customer 3 | Customer Concentration Risk      
Schedule Of Significant Accounting Policies [Line Items]      
Revenue $ 9,200,000 $ 8,800,000  
Minimum      
Schedule Of Significant Accounting Policies [Line Items]      
Long-term financing agreements, repayment schedule extension period 3 months    
Maximum      
Schedule Of Significant Accounting Policies [Line Items]      
Long-term financing agreements, repayment schedule extension period 6 months