Allowance for Doubtful Accounts (Activity in Allowance for Credit Losses) (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jan. 31, 2022
Segment Reporting Information [Line Items]
Beginning balance	$ (17,391)	$ (17,459)	$ (17,459)
Provision for credit losses, net	(719)	(54)	(157)
Accounts written off as uncollectible	43	71	225
Ending balance	(18,067)	(17,442)	(17,391)
Wholesale operations
Segment Reporting Information [Line Items]
Beginning balance	(17,307)	(17,429)	(17,429)
Provision for credit losses, net	(737)	(28)	(103)
Accounts written off as uncollectible	43	71	225
Ending balance	(18,001)	(17,386)	(17,307)
Retail
Segment Reporting Information [Line Items]
Beginning balance	(84)	(30)	(30)
Provision for credit losses, net	18	(26)	(54)
Ending balance	$ (66)	$ (56)	$ (84)