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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jan. 31, 2018
Jan. 31, 2017
Jul. 31, 2018
Jul. 31, 2017
Jul. 31, 2018
Jul. 31, 2017
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]            
Income Taxes Paid         $ 500,000  
Unrecognized Tax Benefits $ 2,325,000 $ 2,096,000 $ 2,800,000 $ 2,000,000 2,800,000 $ 2,000,000
Inventory Write-down 0       $ 0  
Property, Plant and Equipment, Depreciation Methods         Depreciation is computedusing the straight-line method.  
Asset Impairment Charges         $ 0 0
Cash and Cash Equivalents, Period Increase (Decrease) 354,000 $ 130,000,000,000   379,000,000,000    
Provision for Income Taxes [Member]            
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]            
Unrecognized Tax Benefits       $ (2,800,000)   (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]            
Income Taxes Paid           $ 6,500,000
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] | 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   $ 400,000  
Accounting Standards Update 2016-15 [Member]            
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]            
New Accounting Pronouncement or Change in Accounting Principle, Description         Effective February 1, 2018, the Company prospectivelyadopted Accounting Standards Update “ASU” 2016-15 “Statement of Cash Flows (Topic 230), Classification ofCertain Cash Receipts and Cash Payments”. This standard provides guidance on eight specific cash flow issues. The cashflow issues covered by this ASU are: 1) debt prepayment or debt extinguishment costs; 2) settlement of zero-coupon debt instrumentsor other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing;3) contingent consideration payments made after a business combination; 4) proceeds from the settlement of insurance claims; 5)proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies; 6) distributionsreceived from equity method investees; 7) beneficial interests in securitization transactions; and 8) separately identifiable cashflows and application of the predominance principle for distributions received from equity method investees in the Statement ofCash Flows. The adoption of this standard did not affect the consolidated condensed financial statements and related disclosures.  
Accounting Standards Update 2016-18 [Member]            
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]            
New Accounting Pronouncement or Change in Accounting Principle, Description         Effective February 1, 2018, the Company adoptedASU 2016-18 “Statement of Cash Flows (Topic 230), Restricted Cash”. This standard requires that the statementsof cash flows explain the changes in the combined total of restricted and unrestricted cash balances. Amounts generally describedas restricted cash will be combined with unrestricted cash and cash equivalents when reconciling the beginning and end of periodbalances on the statements of cash flows. The Company adopted this standard retrospectively. Therefore, the beginning period balanceof cash and cash equivalents as of January 31, 2017 was increased by $130,000, the end of period balance of cash and cash equivalentsas of July 31, 2017 was increased by $379,000 and the beginning period balance of cash and cash equivalents as of January 31,2018 was increased by $354,000 to reflect the respective restricted cash amounts.  
Accounting Standards Update 2016-02 [Member]            
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) [Line Items]            
New Accounting Pronouncement or Change in Accounting Principle, Description         In February 2016, the FASB issued ASU 2016-02“Leases”. This standard requires that virtually all leases will be recognized by lessees on their balance sheet asa right-of-use asset and a corresponding lease liability, including leases currently accounted for as operating leases. The Companywill be required to adopt this standard effective February 1, 2019. The related leases are currently accounted for as operatingleases (see Note 5). This standard requires a modified retrospective transition approach and allows for early adoption. In July2018, FASB issued Accounting Standards Update, Leases (Topic 842): Targeted Improvements, which provides an option to applythe transition provisions of the new standard at the adoption date instead of the earliest comparative period presented in thefinancial statements.