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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)	3 Months Ended		12 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	Jan. 31, 2019	Jan. 31, 2017	Feb. 01, 2018	Jan. 31, 2018
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Income Taxes Paid	$ 0	$ 0
Proceeds from Income Tax Refunds	0	0
Unrecognized Tax Benefits	$ 2,800,000			$ 2,096,000	$ 2,000,000	$ 2,325,000
Property, Plant and Equipment, Depreciation Methods	Depreciation is computed using the straight-line method.
Cash and Cash Equivalents, Period Increase (Decrease)		$ 130,000		$ 130,000
Provision for Income Taxes [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Unrecognized Tax Benefits	$ 2,800,000
Cost of Sales [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Maximum Percentage of Equity Ownership Interest Which May be Considered for Equity Method of Accounting	20.00%
Minimum [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	(25.00%)		25.00%
Minimum [Member] | Building and Building Improvements [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	5
Minimum [Member] | Fixtures And Equipment [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	2
Maximum [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	(30.00%)		30.00%
Maximum [Member] | Building and Building Improvements [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	40 years
Maximum [Member] | Fixtures And Equipment [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	20 years
Customer Concentration Risk [Member]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]
Income Tax Examination, Penalties and Interest Accrued	$ 400,000					$ 400,000

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Maximum percentage of equity ownership interest which may be considered for equity method of accounting.

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Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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Amount of unrecognized tax benefits.

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