Equipment Held for Sale - Fair Value (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Fair Value
Net gain on sale of leasing equipment	$ 10,737	$ 6,196	$ 19,351	$ 22,184
Equipment, net of selling costs
Fair Value
Net gain on sale of leasing equipment	11,503	7,560	22,660	26,279
Equipment held for sale
Fair Value
Net gain on sale of leasing equipment	(766)	$ (1,364)	(3,309)	$ (4,095)
Carrying value containers impaired to fair value | Level 2
Fair Value
Equipment held for sale	$ 9,408		$ 9,408		$ 11,797