Intangible Assets, Goodwill and Other Assets (Schedule of Other Assets) (Details) - USD ($) $ in Thousands |
Dec. 31, 2018 |
Jan. 01, 2018 |
Dec. 31, 2017 |
---|---|---|---|
Goodwill and Intangible Assets Disclosure [Abstract] | |||
CO2 volumetric production payments, net of amortization | $ 890 | $ 2,175 | |
Deferred marine charges, net | 28,175 | 30,246 | |
Contract Liabilities | 72,241 | $ 59,204 | 0 |
Other deferred costs and deposits | 20,401 | 24,207 | |
Other assets, net of amortization | $ 121,707 | $ 115,832 | $ 56,628 |