Revenue - Performance Obligations (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($)
Revenue
Remaining performance obligations	true
Original expected durations	true
Revenue, Practical Expedient, Incremental Cost of Obtaining Contract [true/false]	true
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	12 months
Future revenue related to current unsatisfied performance obligations	$ 9,327
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	12 months
Future revenue related to current unsatisfied performance obligations	$ 9,164
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	12 months
Future revenue related to current unsatisfied performance obligations	$ 7,178
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	9 months
Future revenue related to current unsatisfied performance obligations	$ 11,654
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period
Future revenue related to current unsatisfied performance obligations	$ 37,323