Summary of Significant Accounting Policies - Remaining Performance Obligations (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Remaining performance obligation	$ 215.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-10-01
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Remaining performance obligation, expected timing of satisfaction, percent	87.50%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	2 years