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Basis of Presentation and Significant Accounting Policies - Recent Accounting Standards (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Jan. 01, 2019
Dec. 31, 2018
Accounting Policies [Abstract]      
Lease, right-of-use asset $ 4,827 $ 2,800 $ 0
Lease, liability 4,939 $ 3,900  
Capitalized computer software, additions $ 300