Summary of Significant Accounting Policies - Disaggregated Rental Revenue (Details) - USD ($)	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Revenues
Total non-lease revenues	$ 30,022,000	$ 30,964,000
Total leasing revenues	52,338,000	58,933,000
Total revenues	82,360,000	89,897,000
Lease inventories and fleet
Revenues
Total non-lease revenues	29,665,000	28,791,000
Manufactured units
Revenues
Total non-lease revenues	357,000	2,173,000
Rental Revenue
Revenues
Total leasing revenues	37,229,000	41,360,000
Rental-related services
Revenues
Total non-lease revenues	10,922,000	13,510,000
Total leasing revenues	15,109,000	17,573,000
North America
Revenues
Total non-lease revenues	17,211,000	19,091,000
Total leasing revenues	36,657,000	43,667,000
Total revenues	53,868,000	62,758,000
North America | Corporate and Intercompany Adjustments
Revenues
Total non-lease revenues	(1,268,000)	(1,333,000)
Total leasing revenues	(83,000)	(318,000)
Total revenues	(1,351,000)	(1,651,000)
North America | Lease inventories and fleet
Revenues
Total non-lease revenues	16,854,000	16,918,000
North America | Manufactured units
Revenues
Total non-lease revenues	357,000	2,173,000
North America | Manufactured units | Corporate and Intercompany Adjustments
Revenues
Total non-lease revenues	(1,268,000)	(1,333,000)
North America | Rental Revenue
Revenues
Total leasing revenues	25,171,000	29,417,000
North America | Rental Revenue | Corporate and Intercompany Adjustments
Revenues
Total leasing revenues	(83,000)	(318,000)
North America | Rental-related services
Revenues
Total leasing revenues	11,486,000	14,250,000
North America | Pac-Van Leasing | Operating Segments
Revenues
Total non-lease revenues	16,834,000	16,918,000
Total leasing revenues	34,419,000	35,602,000
Total revenues	51,253,000	52,520,000
North America | Pac-Van Leasing | Lease inventories and fleet | Operating Segments
Revenues
Total non-lease revenues	16,834,000	16,918,000
North America | Pac-Van Leasing | Rental Revenue | Operating Segments
Revenues
Total leasing revenues	24,148,000	25,254,000
North America | Pac-Van Leasing | Rental-related services | Operating Segments
Revenues
Total leasing revenues	10,271,000	10,348,000
North America | Lone Star Leasing | Corporate and Intercompany Adjustments
Revenues
Total non-lease revenues	50,000	285,000
North America | Lone Star Leasing | Operating Segments
Revenues
Total non-lease revenues	20,000
Total leasing revenues	2,321,000	8,383,000
Total revenues	2,341,000	8,383,000
North America | Lone Star Leasing | Lease inventories and fleet | Operating Segments
Revenues
Total non-lease revenues	20,000
North America | Lone Star Leasing | Rental Revenue | Operating Segments
Revenues
Total leasing revenues	1,106,000	4,481,000
North America | Lone Star Leasing | Rental-related services | Operating Segments
Revenues
Total leasing revenues	1,215,000	3,902,000
North America | Pac Van and Lone Star Leasing | Operating Segments
Revenues
Total non-lease revenues	16,854,000	16,918,000
Total leasing revenues	36,740,000	43,985,000
Total revenues	53,594,000	60,903,000
North America | Pac Van and Lone Star Leasing | Lease inventories and fleet | Operating Segments
Revenues
Total non-lease revenues	16,854,000	16,918,000
North America | Pac Van and Lone Star Leasing | Rental Revenue | Operating Segments
Revenues
Total leasing revenues	25,254,000	29,735,000
North America | Pac Van and Lone Star Leasing | Rental-related services | Operating Segments
Revenues
Total leasing revenues	11,486,000	14,250,000
North America | Manufacturing | Operating Segments
Revenues
Total non-lease revenues	1,625,000	3,506,000
Total revenues	1,625,000	3,506,000
North America | Manufacturing | Manufactured units | Operating Segments
Revenues
Total non-lease revenues	1,625,000	3,506,000
Asia-Pacific | Operating Segments
Revenues
Total non-lease revenues		11,873,000
Total leasing revenues		15,266,000
Total revenues		27,139,000
Asia-Pacific | Lease inventories and fleet | Operating Segments
Revenues
Total non-lease revenues		11,873,000
Asia-Pacific | Rental Revenue | Operating Segments
Revenues
Total leasing revenues		11,943,000
Asia-Pacific | Rental-related services | Operating Segments
Revenues
Total leasing revenues		3,323,000
Asia-Pacific | Royal Wolf Leasing | Operating Segments
Revenues
Total non-lease revenues	12,811,000	11,873,000
Total leasing revenues	15,681,000	15,266,000
Total revenues	28,492,000	$ 27,139,000
Asia-Pacific | Royal Wolf Leasing | Lease inventories and fleet | Operating Segments
Revenues
Total non-lease revenues	12,811,000
Asia-Pacific | Royal Wolf Leasing | Rental Revenue | Operating Segments
Revenues
Total leasing revenues	12,058,000
Asia-Pacific | Royal Wolf Leasing | Rental-related services | Operating Segments
Revenues
Total leasing revenues	$ 3,623,000