v3.20.1
Significant Accounting Policies - Change in Provision for Credit Losses (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Accounts Receivable, Allowance for Credit Loss [Roll Forward]    
Balance as of January 1, 2020 $ 1,330  
Current period provision 629 $ 0
Amounts written off (28)  
Balance as of March 31, 2020 $ 1,931