Senior and Other Debt - Senior Notes and Other Debt - Additional Information (Detail)			3 Months Ended		9 Months Ended	12 Months Ended
	Oct. 31, 2018 USD ($) $ / shares	Apr. 24, 2017 USD ($)	Mar. 31, 2020 USD ($) $ / $	Mar. 31, 2019	Mar. 31, 2020 USD ($) $ / $	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 18, 2014 USD ($)
Pac Van and Lone Star Leasing [Member]
Line of Credit Facility [Line Items]
Intercompany dividends percentage on senior notes gross proceeds		80.00%
Equipment Financing and Other [Member]
Line of Credit Facility [Line Items]
Other debt			$ 8,293,000		$ 8,293,000
Maximum [Member]
Line of Credit Facility [Line Items]
Fixed charge coverage ratio | $ / $			1.00		1.00
Wells Fargo Credit Facility [Member]
Line of Credit Facility [Line Items]
Repayment of indebtedness		$ 4,303,376
Wells Fargo Credit Facility [Member] | North America [Member]
Line of Credit Facility [Line Items]
Debt instrument maturity date					Jul. 31, 2021
Other [Member] | Asia-Pacific [Member]
Line of Credit Facility [Line Items]
Weighted-average interest rate			6.20%	13.70%	7.30%	10.70%
Other [Member] | North America [Member]
Line of Credit Facility [Line Items]
Weighted-average interest rate			5.40%	6.20%	5.80%	6.70%
Senior Notes 8.125% [Member]
Line of Credit Facility [Line Items]
Terms of principal amount redemption					The Company had an option, prior to July 31, 2017, to redeem the Senior Notes in whole or in part upon the payment of 100% of the principal amount of the Senior Notes being redeemed, plus any additional amount required by the Indenture. In addition, the Company may have redeemed up to 35% of the aggregate outstanding principal amount of the Senior Notes before July 31, 2017 with the net cash proceeds from certain equity offerings at a redemption price of 108.125% of the principal amount plus accrued and unpaid interest.
Senior notes redemption percentage on principal amount					35.00%
Redemption price percentage on principal amount plus accrued and unpaid interest					108.125%
Senior Notes 8.125% [Member] | Second Supplemental Indenture [Member]
Line of Credit Facility [Line Items]
Notes issued denominations and multiples of denominations	$ 25
Debt instrument, aggregate original issue discount		10,780
Percentage of Shareholders concluded a consent solicitation	63.30%
Consent fee paid	$ 195,820
Notes issued denominations and multiples of denominations, per share | $ / shares	$ 0.10
Senior Notes 8.125% [Member] | Unsecured senior notes [Member]
Line of Credit Facility [Line Items]
Aggregate principal amount of senior notes issued		5,390,000				$ 77,390,000	$ 72,000,000
Notes issued denominations and multiples of denominations								$ 25
Notes issued denominations		24.95
Aggregate principal amount of senior notes issued, net of unamortized debt issuance costs			$ 76,618,000		$ 76,618,000	76,184,000
Unamortized debt issuance costs			$ 772,000		$ 772,000	$ 1,206,000
Proceeds from issuance of unsecured senior notes net off underwriting discounts and offering costs		5,190,947
Underwriting discount		$ 188,273
Interest rate of senior notes								8.125%
Debt instrument maturity date					Jul. 31, 2021
Frequency of interest payments					quarterly
Interest payment terms					Interest on the Senior Notes is payable quarterly in arrears on January 31, April 30, July 31 and October 31, commencing on July 31, 2014.
Senior Notes 8.125% [Member] | On or after July 31, 2017 [Member]
Line of Credit Facility [Line Items]
Senior notes redemption percentage on principal amount					100.00%
Redemption price percentage on principal amount plus accrued and unpaid interest					102.031%	106.094%