Income Taxes (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Jan. 31, 2026	Jan. 31, 2025
Deferred tax assets
Accrued vacation and sick leave	$ 892	$ 2,238
Retirement plans	1,809	1,725
Insurance reserves	214	227
Warranty	126	126
Net operating loss carryforwards	471	439
Operating lease liability	9,172	9,505
Inventories	1,700	1,709
Other	476	580
Total deferred tax assets	14,860	16,549
Deferred tax liabilities
Tax in excess of book depreciation	(788)	(804)
Right of use assets	(7,644)	(8,979)
Other	(760)	(709)
Total deferred tax liabilities	(9,192)	(10,492)
Valuation allowance	(231)	(236)
Net long term deferred tax asset	$ 5,437	$ 5,821