Notes Payable (Tables)

12 Months Ended

Dec. 31, 2015

Notes Payable

Schedule of notes payable

	As of December 31,
	2015		2014
	(in thousands)
Credit facility at a floating rate of interest of LIBOR plus 2.75%, secured by engines. The facility has a committed amount of $700.0 million  at December 31, 2015, which revolves until the maturity date of June 2019.	$	549,000	$	430,000
WEST II Series 2012-A term notes payable at a fixed rate of interest of 5.50%, maturing in September 2037. Secured by engines.		300,467		351,899
Note payable at fixed interest rates ranging from 2.60% to 2.97%, maturing in July 2024. Secured by an aircraft.		16,135		12,909
Note payable at a variable interest rate of LIBOR plus 2.25%, maturing in January 2018. Secured by engines.		13,082		14,455
Note payable at a variable interest rate of LIBOR plus 4.00%, repaid in March 2015. Secured by engines.		—		24,000
Note payable at a fixed interest rate of 5.50%, repaid in July 2015. Secured by one engine.		—		7,693
Total notes payable	$	878,684	$	840,956

Schedule or principal outstanding

Year	(in thousands)
2016	$	22,702
2017		23,718
2018		33,391
2019 (includes $549.0 million outstanding on revolving credit facility)		572,529
2020		23,127
Thereafter		203,217
	$	878,684