Annual report pursuant to Section 13 and 15(d)

The Company and its Significant Accounting Policies - Summary of Revenue From Customers (Details)

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The Company and its Significant Accounting Policies - Summary of Revenue From Customers (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Disaggregation Of Revenue [Line Items]    
Total revenues $ 116,251 $ 135,665
Customer A    
Disaggregation Of Revenue [Line Items]    
Total revenues   1,067
Customer B    
Disaggregation Of Revenue [Line Items]    
Total revenues   3,101
Customer A and B    
Disaggregation Of Revenue [Line Items]    
Total revenues   $ 4,168