Segment Reporting - Schedule of Disaggregated Charter Segment Revenue by Customer and Service Type (Details) - Charter [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Total Charter Revenue	$ 497,547	$ 315,679	$ 825,176	$ 620,793
Commercial Customers [Member]
Segment Reporting Information [Line Items]
Total Charter Revenue	394,079	136,232	571,673	292,743
AMC [Member]
Segment Reporting Information [Line Items]
Total Charter Revenue	103,468	179,447	253,503	328,050
Cargo [Member]
Segment Reporting Information [Line Items]
Total Charter Revenue	443,824	225,195	680,787	431,545
Cargo [Member] | Commercial Customers [Member]
Segment Reporting Information [Line Items]
Total Charter Revenue	394,062	133,178	568,551	282,082
Cargo [Member] | AMC [Member]
Segment Reporting Information [Line Items]
Total Charter Revenue	49,762	92,017	112,236	149,463
Passenger [Member]
Segment Reporting Information [Line Items]
Total Charter Revenue	53,723	90,484	144,389	189,248
Passenger [Member] | Commercial Customers [Member]
Segment Reporting Information [Line Items]
Total Charter Revenue	17	3,054	3,122	10,661
Passenger [Member] | AMC [Member]
Segment Reporting Information [Line Items]
Total Charter Revenue	$ 53,706	$ 87,430	$ 141,267	$ 178,587