INCOME TAXES (Details) - USD ($)	12 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Income Tax Disclosure [Abstract]
Deferred Tax Assets, Tax Credit Carryforwards	$ 36,198,000	$ 26,523,000
Deferred Tax Assets, Valuation Allowance	$ 232,000	$ 232,000	$ 241,000	$ 417,000
Valuation Allowance, Methodologies and Assumptions		$9,000	$176,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%		35.00%
Deferred Other Tax Expense (Benefit)	$ (14,362,000)
Tax Adjustments, Settlements, and Unusual Provisions	272,000
Tax Credit Carryforward, Amount	9,000,000	$ 21,200,000	$ 11,500,000
Deferred Federal, State and Local, Tax Expense (Benefit)	400,000	4,600,000
Income Taxes Paid	565,000	855,000	6,920,000
Proceeds from Income Tax Refunds	11,000	$ 1,132,000	$ 476,000
Unrecognized Tax Benefits	7,353,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	17,000
Increase (Decrease) in Provision For Income Taxes	$ (7,299,000)