Recent Accounting Developments (Future Required Fixed Payments) (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Accounting Changes and Error Corrections [Abstract]
Remaining in 2019	$ 5,585
2020	23,253
2021	21,424
2022	20,728
2023	18,618
2024	17,741
2025 and thereafter	149,964
Total minimum future amounts	257,313
Impact of measuring the lease liability on a discounted basis	(65,236)
Total lease liability	$ 192,077