Details Of Certain Accounts - Other Assets, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Prepaids	$ 694	$ 777
Deferred recertification and dry dock costs, net	30,545	16,065
Deferred costs (Note 10)	8,594	14,531
Charter deposit	12,544	12,544
Other receivable	27,914	27,264
Goodwill (Note 6)	0	7,157
Intangible assets with finite lives, net	3,680	3,847
Other	2,103	2,323
Total other assets, net	$ 86,074	$ 84,508