INCOME TAXES (Details) - USD ($)	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Income Tax Disclosure [Abstract]
Deferred Tax Assets, Tax Credit Carryforwards	$ 39,199,000	$ 40,641,000
Deferred Tax Assets, Valuation Allowance	213,000	232,000
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	19,000
Tax Credit Carryforward, Amount	11,300,000	5,200,000	$ 9,000,000
Deferred Tax Assets, Tax Credit Carryforwards, Research	(3,000,000)	900,000	400,000
Income Taxes Paid	7,239,000	1,274,000	565,000
Proceeds from Income Tax Refunds		$ 655,000	$ 11,000
Unrecognized Tax Benefits Without Accrued Penalties and Interest	16,741,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	40,000
Increase (Decrease) in Provision For Income Taxes	$ (16,662,000)