Revenue from Contracts with Clients - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) segment	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Revenue from Contract with Customer [Abstract]
Number of operating segments | segment			1
Revenue recognized	$ 719	$ 3,387	$ 8,580	$ 12,628
Remaining performance obligations	$ 113,418		$ 113,418		$ 113,592
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations, expected term	12 months		12 months
Remaining performance obligations, percentage	50.90%		50.90%
Maximum | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations, expected term	5 years		5 years