REVENUES - Components of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 708,411	$ 335,583	$ 297,934
Lease income
Disaggregation of Revenue [Line Items]
Revenues	178,874	172,117	177,476
Maintenance revenue
Disaggregation of Revenue [Line Items]
Revenues	148,846	128,819	101,462
Finance lease income
Disaggregation of Revenue [Line Items]
Revenues	440	1,747	2,260
Asset sales revenue
Disaggregation of Revenue [Line Items]
Revenues	208,500	0	0
Aerospace products revenue
Disaggregation of Revenue [Line Items]
Revenues	153,550	23,301	0
Other revenue
Disaggregation of Revenue [Line Items]
Revenues	18,201	9,599	16,736
Aviation Leasing
Disaggregation of Revenue [Line Items]
Revenues	527,913	298,121	281,211
Aviation Leasing | Lease income
Disaggregation of Revenue [Line Items]
Revenues	158,628	161,986	166,331
Aviation Leasing | Maintenance revenue
Disaggregation of Revenue [Line Items]
Revenues	148,846	128,819	101,462
Aviation Leasing | Finance lease income
Disaggregation of Revenue [Line Items]
Revenues	440	1,747	2,260
Aviation Leasing | Asset sales revenue
Disaggregation of Revenue [Line Items]
Revenues	208,500	0	0
Aviation Leasing | Aerospace products revenue
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Aviation Leasing | Other revenue
Disaggregation of Revenue [Line Items]
Revenues	11,499	5,569	11,158
Aerospace Products
Disaggregation of Revenue [Line Items]
Revenues	153,550	23,301	0
Aerospace Products | Lease income
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Aerospace Products | Maintenance revenue
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Aerospace Products | Finance lease income
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Aerospace Products | Asset sales revenue
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Aerospace Products | Aerospace products revenue
Disaggregation of Revenue [Line Items]
Revenues	153,550	23,301	0
Aerospace Products | Other revenue
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Corporate and Other
Disaggregation of Revenue [Line Items]
Revenues	26,948	14,161	16,723
Corporate and Other | Lease income
Disaggregation of Revenue [Line Items]
Revenues	20,246	10,131	11,145
Corporate and Other | Maintenance revenue
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Corporate and Other | Finance lease income
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Corporate and Other | Asset sales revenue
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Corporate and Other | Aerospace products revenue
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Corporate and Other | Other revenue
Disaggregation of Revenue [Line Items]
Revenues	$ 6,702	$ 4,030	$ 5,578