Debt and Other Obligations (Tables)

3 Months Ended

Mar. 31, 2019

Debt Disclosure [Abstract]

Schedule of Long-term Debt

Long-term debt is comprised of the following:

	As of				Three Months Ended March 31,
	March 31, 2019		December 31, 2018		2019		2018
	(in millions)				(weighted-average interest rates)
Fixed-rate senior term loans due through 2027	$	373.2	$	382.4	4.10	%	4.10	%
Fixed-rate junior term loans due through 2022	29.0		31.1		6.90	%	6.90	%
Fixed-rate loans due through 2031	649.5		625.1		3.67	%	3.83	%
Fixed-rate class A 2015-1 EETC due through 2028	378.6		378.6		4.10	%	4.10	%
Fixed-rate class B 2015-1 EETC due through 2024	80.0		80.0		4.45	%	4.45	%
Fixed-rate class C 2015-1 EETC due through 2023	109.5		109.5		4.93	%	N/A
Fixed-rate class AA 2017-1 EETC due through 2030	235.4		242.5		3.38	%	3.38	%
Fixed-rate class A 2017-1 EETC due through 2030	78.5		80.8		3.65	%	3.65	%
Fixed-rate class B 2017-1 EETC due through 2026	77.2		83.7		3.80	%	3.80	%
Fixed-rate class C 2017-1 EETC due through 2023	85.5		85.5		5.11	%	N/A
Revolving credit facility due in 2020	160.0		135.3		3.88	%	N/A
Long-term debt	2,256.4		2,234.5
Less current maturities	172.3		162.8
Less unamortized discounts, net	46.0		47.7
Total	$	2,038.1	$	2,024.0

Schedule of Maturities of Long-term Debt

At March 31, 2019, long-term debt principal payments for the next five years and thereafter are as follows:

	March 31, 2019
	(in millions)
remainder of 2019	$	135.8
2020	212.8
2021	283.3
2022	161.9
2023	300.5
2024 and beyond	1,162.1
Total debt principal payments	$	2,256.4

Schedule of Interest Expense, Long-term Debt

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

	Three Months Ended March 31,
	2019		2018
	(in thousands)
Fixed-rate senior term loans	$	3,945	$	4,317
Fixed-rate junior term loans	523		667
Fixed-rate term loans	6,202		4,911
Class A 2015-1 EETC	3,838		4,142
Class B 2015-1 EETC	880		1,012
Class C 2015-1 EETC	1,335		—
Class AA 2017-1 EETC	1,989		682
Class A 2017-1 EETC	717		246
Class B 2017-1 EETC	754		283
Class C 2017-1 EETC	1,080		—
Revolving credit facility	1,413		—
Amortization of deferred financing costs	2,192		1,491
Commitment and other fees	74		77
Finance leases	29		21
Total	$	24,971	$	17,849