Nature of Operations and Basis of Presentation - Performance Obligation (Details) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-04-01	Mar. 31, 2019
Twelve Months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation (as a percent)	50.00%
Expected timing of satisfaction of remaining performance obligation	1 year
Twenty-Four Months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation (as a percent)	75.00%
Expected timing of satisfaction of remaining performance obligation	2 years