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Debt Obligations (Tables)
 3 Months Ended
Mar. 31, 2025
Debt Disclosure [Abstract]  
Schedule of Notes Payable
Debt obligations consisted of the following:
March 31,
2025		December 31,
2024
(in thousands)
Credit facility at a floating rate of interest of one-month term Secured Overnight Financing Rate (“SOFR”) plus 2.60% at March 31, 2025, secured by engines, airframes, and loan assets. The facility has a committed amount of $1.0 billion at March 31, 2025, which revolves until the maturity date of October 2029.
$644,000 $693,000 
WEST VII Series A 2023 term notes payable at a fixed rate of interest of 8.00%, maturing in October 2048, secured by engines, airframes, and loan assets
344,279 356,355 
WEST VI Series A 2021 term notes payable at a fixed rate of interest of 3.10%, maturing in May 2046, secured by engines, airframes, and loan assets
238,748 241,065 
WEST VI Series B 2021 term notes payable at a fixed rate of interest of 5.44%, maturing in May 2046, secured by engines, airframes, and loan assets
33,164 33,486 
WEST VI Series C 2021 term notes payable at a fixed rate of interest of 7.39%, maturing in May 2046, secured by engines, airframes, and loan assets
9,355 9,926 
WEST V Series A 2020 term notes payable at a fixed rate of interest of 3.23%, maturing in March 2045, secured by engines
223,338 226,572 
WEST V Series B 2020 term notes payable at a fixed rate of interest of 4.21%, maturing in March 2045, secured by engines
31,112 31,563 
WEST V Series C 2020 term notes payable at a fixed rate of interest of 6.66%, maturing in March 2045, secured by engines
7,513 8,142 
WEST IV Series A 2018 term notes payable at a fixed rate of interest of 4.75%, maturing in September 2043, secured by engines
196,768 199,846 
WEST IV Series B 2018 term notes payable at a fixed rate of interest of 5.44%, maturing in September 2043, secured by engines
26,916 27,338 
WEST III Series A 2017 term notes payable at a fixed rate of interest of 4.69%, maturing in August 2042, secured by engines
157,825 161,308 
WEST III Series B 2017 term notes payable at a fixed rate of interest of 6.36%, maturing in August 2042, secured by engines
21,191 21,659 
Willis Warehouse Facility LLC (“WWFL”) credit facility at a floating rate of interest of one-month term SOFR, plus 2.25% at March 31, 2025 maturing in May 2029, secured by engines, airframes, and loan assets
218,667 221,882 
Note payable at a fixed rate of interest of 5.00%, maturing in February 2033, secured by an engine
20,712 20,780 
Note payable at a fixed rate of interest of 4.59%, maturing in November 2032, secured by an engine
21,962 22,094 
Note payable at a fixed rate of interest of 4.23%, maturing in June 2032, secured by an engine
17,686 17,710 
Note payable at a fixed rate of interest of 5.17%, maturing in March 2033, secured by an engine
24,000 — 
Note payable at a fixed rate of interest of 5.91%, maturing in March 2034, secured by an engine
21,110 — 
2,258,346 2,292,726 
Less: unamortized debt issuance costs and note discounts(26,753)(28,174)
Total debt obligations$2,231,593 $2,264,552 
Schedule or Debt Maturities
Principal outstanding at March 31, 2025 is expected to be repayable as follows:

Year(in thousands)
2025$53,415 
2026270,495 
2027192,963 
2028238,982 
20291,407,088 
Thereafter95,403 
Total$2,258,346