Income Taxes Income Taxes (Textual) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Effective Income Tax Rate, Continuing Operations	(2.50%)	17.30%	(2.20%)	12.50%
Deferred Income Tax Expense (Benefit)	$ 3,973		$ 950	$ 2,845
Effective Income Tax Rate Reconciliation, Tax Contingency, Other, Percent	(4.60%)	9.10%	(2.60%)	8.60%
Merger Expenses	$ 220	$ 0	$ 32,430	$ 0
South African Airways [Member] | Transactional [Member]
Asset Impairment Charges, net of Maintenance Revenue, Lease Rentals Received in Advance and Security Deposits			206,744
BERMUDA
Merger Expenses			$ 32,385