Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2023	Jan. 31, 2022
Allowance for doubtful accounts
Valuation and Qualifying Accounts Disclosure
Valuation Allowances and Reserves, Beginning Balance	$ 200	$ 200
Valuation Allowances and Reserves, Charged to (Reduced from) Expenses	0	0
Valuation Allowances and Reserves, Deductions from Reserves	0	0
Valuation Allowances and Reserves, Ending Balance	200	200
Product, general, workers’ compensation and automobile liability reserves
Valuation and Qualifying Accounts Disclosure
Valuation Allowances and Reserves, Beginning Balance	1,165	1,135
Valuation Allowances and Reserves, Charged to (Reduced from) Expenses	1,300	1,168
Valuation Allowances and Reserves, Deductions from Reserves	1,215	1,138
Valuation Allowances and Reserves, Ending Balance	$ 1,250	$ 1,165