Debt and Other Obligations (Tables)

9 Months Ended

Sep. 30, 2019

Debt Disclosure [Abstract]

Schedule of Long-term Debt

Long-term debt is comprised of the following:

	As of				As of
	September 30, 2019		December 31, 2018		September 30, 2019		December 31, 2018
	(in millions)				(weighted-average interest rates)
Fixed-rate senior term loans due through 2027	$	354.7	$	382.4	4.10	%	4.10	%
Fixed-rate junior term loans due through 2022	24.6		31.1		6.90	%	6.90	%
Fixed-rate loans due through 2031	660.0		625.1		3.48	%	3.88	%
Fixed-rate class A 2015-1 EETC due through 2028	363.6		378.6		4.10	%	4.10	%
Fixed-rate class B 2015-1 EETC due through 2024	76.0		80.0		4.45	%	4.45	%
Fixed-rate class C 2015-1 EETC due through 2023	103.8		109.5		4.93	%	4.93	%
Fixed-rate class AA 2017-1 EETC due through 2030	228.4		242.5		3.38	%	3.38	%
Fixed-rate class A 2017-1 EETC due through 2030	76.1		80.8		3.65	%	3.65	%
Fixed-rate class B 2017-1 EETC due through 2026	70.6		83.7		3.80	%	3.80	%
Fixed-rate class C 2017-1 EETC due through 2023	85.5		85.5		5.11	%	5.11	%
Revolving credit facility due in 2020	160.0		135.3		3.45	%	3.72	%
Long-term debt	2,203.3		2,234.5
Less current maturities	193.7		162.8
Less unamortized discounts, net	42.0		47.7
Total	$	1,967.6	$	2,024.0

Schedule of Maturities of Long-term Debt

At September 30, 2019, long-term debt principal payments for the next five years and thereafter are as follows:

	September 30, 2019
	(in millions)
Remainder of 2019	$	49.3
2020	221.1
2021	280.8
2022	164.3
2023	303.1
2024 and beyond	1,184.7
Total debt principal payments	$	2,203.3

Schedule of Interest Expense, Long-term Debt

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

	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
	(in thousands)
Fixed-rate senior term loans	$	3,809	$	4,195	$	11,632	$	12,769
Fixed-rate junior term loans	454		605		1,467		1,908
Fixed-rate term loans	6,517		4,844		19,151		14,636
Class A 2015-1 EETC	3,747		4,057		11,294		12,214
Class B 2015-1 EETC	850		939		2,570		2,881
Class C 2015-1 EETC	1,279		1,420		3,894		2,209
Class AA 2017-1 EETC	1,973		1,751		5,959		4,008
Class A 2017-1 EETC	711		631		2,148		1,445
Class B 2017-1 EETC	708		700		2,199		1,636
Class C 2017-1 EETC	1,104		934		3,275		1,400
Revolving credit facility	1,493		—		4,466		—
Amortization of deferred financing costs	2,175		1,784		6,544		4,930
Commitment and other fees	281		49		400		182
Finance leases	37		16		376		54
Total	$	25,138	$	21,925	$	75,375	$	60,272