Revenue from Contracts with Customers (Summary of Remaining Unsatisfied Performance Obligations) (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Disaggregation Of Revenue [Line Items]
Estimated recognition of remaining performance obligations	$ 17,555
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-10-01
Disaggregation Of Revenue [Line Items]
Estimated recognition of remaining performance obligations	$ 14,866
Revenue, remaining performance obligation, expected timing of satisfaction, period	9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-07-01
Disaggregation Of Revenue [Line Items]
Estimated recognition of remaining performance obligations	$ 1,663
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-07-01
Disaggregation Of Revenue [Line Items]
Estimated recognition of remaining performance obligations	$ 1,026
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-07-01
Disaggregation Of Revenue [Line Items]
Estimated recognition of remaining performance obligations	$ 0
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2023-07-01
Disaggregation Of Revenue [Line Items]
Estimated recognition of remaining performance obligations	$ 0
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2024-07-01
Disaggregation Of Revenue [Line Items]
Estimated recognition of remaining performance obligations	$ 0
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year