Organization and Summary of Significant Accounting Policies - Organization and Revenue Recognition (Details) - USD ($)	1 Months Ended	12 Months Ended
	May 31, 2024	Dec. 31, 2024	Dec. 31, 2023
Organizations [Line Items]
Subsidiary, percentage owned		100.00%
Revenue Recognition
Deferred in substance fixed payment		$ 21,700,000	$ 28,400,000
Lease rent receivables past due		3,900,000
Maintenance reserve receivables past due		$ 3,600,000
Minimum number of days for which lease rent and maintenance reserve payments are past due		30 days
Cost of maintenance services		$ 24,470,000	21,159,000
General and administrative		146,757,000	115,740,000
Technical expense		22,294,000	28,109,000
Revolving credit facility
Organizations [Line Items]
Line of credit facility, maximum borrowing capacity		500,000,000
Revision of Prior Period, Reclassification, Adjustment
Revenue Recognition
Cost of maintenance services			21,200,000
General and administrative			29,000,000.0
Technical expense			7,900,000
Maintenance services revenue
Revenue Recognition
Other sales and revenues		$ 24,158,000	24,168,000
Maintenance services revenue | Revision of Prior Period, Reclassification, Adjustment
Revenue Recognition
Other sales and revenues			$ 24,200,000
Revenue Benchmark | Customer Concentration Risk | Two Customer
Revenue Recognition
Concentration risk, percentage, more than		11.00%
Revenue Benchmark | Customer Concentration Risk | One Customer
Revenue Recognition
Concentration risk, percentage, more than			15.00%
Accounts Receivable Benchmark | Customer Concentration Risk | One Customer
Revenue Recognition
Concentration risk, percentage, more than		11.00%	12.00%
WWFL credit facility at a floating rate of interest of one-month term SOFR, plus 2.25% at December 31, 2024, maturing in May 2029, secured by engines, airframes, and loan assets
Organizations [Line Items]
Debt instrument, term (in years)	5 years
Availability period (in years)	2 years
Line of credit facility, maximum borrowing capacity	$ 500,000,000
WEST III
Organizations [Line Items]
Subsidiary, percentage owned		100.00%
WEST IV
Organizations [Line Items]
Subsidiary, percentage owned		100.00%
West V
Organizations [Line Items]
Subsidiary, percentage owned		100.00%
WEST VI
Organizations [Line Items]
Subsidiary, percentage owned		100.00%
WEST VII
Organizations [Line Items]
Subsidiary, percentage owned			100.00%
WEST VII | WEST VII Notes
Organizations [Line Items]
Aggregate principal amount			$ 410,000,000