Revenue Revenue, Remaining Performance Obligation (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Revenue [Abstract]
Anticipated recognition of revenue for the remainder of 2019	$ 4,260
Anticipated recognition of revenue in 2020	7,025
Anticipated recognition of revenue in 2021	5,985
Anticipated recognition of revenue in 2022	5,782
Anticipated recognition of revenue in 2023	5,527
Anticipated recognition of revenue thereafter	72,688
Revenue, Remaining Performance Obligation, Amount	$ 101,267