Details Of Certain Accounts - Other Assets, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Deferred recertification and dry dock costs, net (Note 2)	$ 21,464	$ 16,065
Deferred costs (Note 12)	861	14,531
Charter deposit	12,544	12,544
Other receivable (Note 16)	0	27,264
Goodwill (Note 7)	0	7,157
Intangible assets with finite lives, net (Note 2)	3,809	3,847
Other	1,335	3,100
Total other assets, net	$ 40,013	$ 84,508