Debt Obligations (Tables)

3 Months Ended

Mar. 31, 2019

Debt Disclosure [Abstract]

Schedule of notes payable

Debt obligations consisted of the following:

	March 31, 2019			December 31, 2018
	(in thousands)
Credit facility at a floating rate of interest of one-month LIBOR plus 1.5% at March 31, 2019, secured by engines. The facility has a committed amount of $890.0 million at March 31, 2019, which revolves until the maturity date of April 2021	$	392,000		$	427,000
WEST IV Series A 2018 term notes payable at a fixed rate of interest of 4.75%, maturing in September 2043, secured by engines	319,390			323,075
WEST IV Series B 2018 term notes payable at a fixed rate of interest of 5.44%, maturing in September 2043, secured by engines	45,627			46,154
WEST III Series A 2017 term notes payable at a fixed rate of interest of 4.69%, maturing in August 2042, secured by engines	270,901			274,205
WEST III Series B 2017 term notes payable at a fixed rate of interest of 6.36%, maturing in August 2042, secured by engines	38,740			39,212
WEST II Series A 2012 term notes payable at a fixed rate of interest of 5.50%, maturing in September 2037, secured by engines	232,409			237,847
Note payable at three-month LIBOR plus a margin ranging from 1.85% to 5.25% at March 31, 2019, maturing in July 2022, secured by engines	8,120			—
Note payable at fixed interest rates ranging from 2.60% to 2.97%, maturing in July 2024, secured by an aircraft	10,483			10,937
	1,317,670			1,358,430
Less: unamortized debt issuance costs	(19,834		)	(21,081		)
Total debt obligations	$	1,297,836		$	1,337,349

Schedule or principal outstanding

Principal outstanding at March 31, 2019, is repayable as follows:

Year	(in thousands)
2019	$	42,333
2020	56,128
2021 (includes $392.0 million outstanding on revolving credit facility)	448,418
2022 (includes $163.1 million outstanding on WEST II Series A 2012 term notes)	212,671
2023	34,008
Thereafter	524,112
Total	$	1,317,670