Debt and Other Obligations (Tables)

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Schedule of long-term debt instruments

Long-term debt is comprised of the following:

	As of
	December 31, 2019		December 31, 2018		December 31, 2019		December 31, 2018
	(in millions)				(weighted-average interest rates)
Fixed-rate senior term loans due through 2027	$	296.1	$	382.4	4.02	%	4.10	%
Fixed-rate junior term loans due through 2022	—		31.1		N/A		6.90	%
Fixed-rate loans due through 2030	778.2		625.1		3.70	%	3.88	%
Fixed-rate class A 2015-1 EETC due through 2028	348.6		378.6		4.10	%	4.10	%
Fixed-rate class B 2015-1 EETC due through 2024	72.0		80.0		4.45	%	4.45	%
Fixed-rate class C 2015-1 EETC due through 2023	98.1		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 2021	160.0		135.3		3.12	%	3.72	%
Long-term debt	$	2,213.6	$	2,234.5
Less current maturities	214.0		162.8
Less unamortized discount, net	40.4		47.7
Total	$	1,959.2	$	2,024.0

Schedule of maturities of long-term debt

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

	December 31, 2019
	(in millions)
2020	$	222.1
2021	273.8
2022	167.7
2023	310.1
2024	195.5
2025 and beyond	1,044.4
Total debt principal payments	$	2,213.6

Schedule of interest expense on long-term debt and capital leases

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

	Year Ended December 31,
	2019		2018
	(in thousands)
Fixed-rate senior term loans	$	15,225	$	16,869
Fixed-rate junior term loans	1,811		2,475
Fixed-rate term loans	25,828		19,615
Class A 2015-1 EETC	14,894		16,138
Class B 2015-1 EETC	3,377		3,781
Class C 2015-1 EETC	5,117		3,575
Class AA 2017-1 EETC	7,887		6,026
Class A 2017-1 EETC	2,843		2,172
Class B 2017-1 EETC	2,870		2,420
Class C 2017-1 EETC	4,367		2,478
Revolving credit facility	5,792		793
Finance leases	408		104
Commitment fees and other	2,217		262
Amortization of deferred financing costs	8,714		7,069
Total	$	101,350	$	83,777