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Summary of Significant Accounting Policies (Details) - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Accounting Policies [Abstract]        
Health insurance maximum risk of loss liability per employee insurance plan (up to)     $ 600  
Health insurance maximum aggregate amount of risk of loss liability for employee insurance plans (up to)     $ 200  
Common stock equivalents (in shares) (398) (572) (328) (555)
Anti-dilutive common stock equivalents (in shares) 266   348