Debt and Other Obligations (Tables)

6 Months Ended

Jun. 30, 2020

Debt Disclosure [Abstract]

Schedule of long-term debt

Long-term debt is comprised of the following:

	As of				As of
	June 30, 2020		December 31, 2019		June 30, 2020		December 31, 2019
	(in millions)				(weighted-average interest rates)
Fixed-rate senior term loans due through 2027	$	279.4	$	296.1	3.55	%	4.02	%
Fixed-rate loans due through 2031	992.2		778.2		3.34	%	3.70	%
Unsecured term loans due in 2030	60.4		—		1.00	%	N/A
Fixed-rate class A 2015-1 EETC due through 2028	333.5		348.6		4.10	%	4.10	%
Fixed-rate class B 2015-1 EETC due through 2024	68.0		72.0		4.45	%	4.45	%
Fixed-rate class C 2015-1 EETC due through 2023	92.4		98.1		4.93	%	4.93	%
Fixed-rate class AA 2017-1 EETC due through 2030	221.4		228.4		3.38	%	3.38	%
Fixed-rate class A 2017-1 EETC due through 2030	73.8		76.1		3.65	%	3.65	%
Fixed-rate class B 2017-1 EETC due through 2026	65.6		70.6		3.80	%	3.80	%
Fixed-rate class C 2017-1 EETC due through 2023	85.5		85.5		5.11	%	5.11	%
Convertible debt due in 2025	101.4		—		4.75	%	N/A
Revolving credit facility due in 2021	111.2		160.0		1.58	%	3.12	%
Revolving credit facility due in 2022	180.0		—		2.19	%	N/A
Long-term debt	2,664.8		2,213.6
Less current maturities	287.8		214.0
Less unamortized discounts, net	44.8		40.4
Total	$	2,332.2	$	1,959.2

Schedule of maturities of long-term debt

At June 30, 2020, long-term debt principal payments for the next five years and thereafter are as follows:

	June 30, 2020
	(in millions)
remainder of 2020	$	110.2
2021	278.3
2022	365.6
2023	329.8
2024	215.1
2025 and beyond	1,365.8
Total debt principal payments	$	2,664.8

Schedule of interest expense, long-term debt

Interest expense related to long-term debt and finance leases consists of the following:

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
	(in thousands)
Fixed-rate senior term loans	$	2,601	$	3,878	$	5,414	$	7,823
Fixed-rate junior term loans	—		489		—		1,012
Fixed-rate term loans	8,210		6,432		15,823		12,634
Unsecured term loans	57		—		57		—
Class A 2015-1 EETC	3,403		3,709		6,952		7,547
Class B 2015-1 EETC	752		841		1,548		1,721
Class C 2015-1 EETC	1,138		1,280		2,347		2,615
Class AA 2017-1 EETC	1,868		1,997		3,755		3,986
Class A 2017-1 EETC	673		720		1,354		1,437
Class B 2017-1 EETC	623		737		1,267		1,491
Class C 2017-1 EETC	1,092		1,092		2,184		2,171
Convertible debt (1)	3,138		—		3,138		—
Revolving credit facilities	1,456		1,559		2,614		2,973
Amortization of deferred financing costs	2,526		2,177		4,632		4,369
Commitment and other fees	228		46		445		119
Finance leases	27		309		140		339
Total	$	27,792	$	25,266	$	51,670	$	50,237

(1) Includes $2.0 million of accretion and $1.1 million of interest expense for the three and six months ended June 30, 2020.