Summary of Future Minimum Payments Receivable Under Container Leaseback Financing Receivable (Detail) - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020
Lessor Disclosure [Abstract]
Future minimum payments receivable		$ 483,325	$ 505,473
Less: unearned income		(129,065)	(141,181)
Container leaseback financing receivable	[1]	354,260	364,292
Less: Allowance for credit losses		(113)	(424)
Container leaseback financing receivable, net		354,147	363,868
Amounts due within one year		30,317	27,076
Amounts due beyond one year		$ 323,830	$ 336,792

[1]   One major customer represented 90.6% and 89.7% of the Company’s container leaseback financing receivable portfolio as of December 31, 2021 and 2020, respectively. As of December 31, 2020, one other customer represented 10.3% of the Company’s container leaseback financing receivable portfolio.