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Employee Benefits - 401(K) Plan (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Schedule of Defined Contribution Plans Disclosures [Line Items]    
Defined contribution plan, minimum age requirement 18 years  
Percentage vested in deferral contributions account 100.00%  
Employer contributions $ 1,200 $ 917
Contributions between 1% to 3%    
Schedule of Defined Contribution Plans Disclosures [Line Items]    
Employer matching percentage 100.00%  
Contributions between 1% to 3% | Minimum    
Schedule of Defined Contribution Plans Disclosures [Line Items]    
Defined contribution plan, employee contribution (percent) 1.00%  
Contributions between 1% to 3% | Maximum    
Schedule of Defined Contribution Plans Disclosures [Line Items]    
Defined contribution plan, employee contribution (percent) 3.00%  
Contributions between 4% and 5%    
Schedule of Defined Contribution Plans Disclosures [Line Items]    
Employer matching percentage 50.00%  
Contributions between 4% and 5% | Minimum    
Schedule of Defined Contribution Plans Disclosures [Line Items]    
Defined contribution plan, employee contribution (percent) 4.00%  
Contributions between 4% and 5% | Maximum    
Schedule of Defined Contribution Plans Disclosures [Line Items]    
Defined contribution plan, employee contribution (percent) 5.00%