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Equity Awards and Instruments - Schedule of Fair Value Assumptions (Details) - Stock Option - $ / shares
9 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2020
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expected volatility   31.04% 29.57%  
Expected dividend yield 0.00% 1.11% 1.38% 1.18%
Risk-free interest rate   1.31% 2.48% 2.40%
Expected term (in years)   3 years 9 months 3 years 9 months  
Weighted average grant date fair value of options issued (USD per share)   $ 2.49 $ 1.66 $ 1.46