SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - New Accounting Guidance (Details) - USD ($)	Jul. 31, 2019	May 01, 2019
New Accounting Pronouncements or Change in Accounting Principle
Operating Right-of-use assets, net	$ 2,214,000
Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle
Lease liabilities	206,000
ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle
Lease liabilities	2,420,000
Operating Right-of-use assets, net	$ 2,214,000	$ 2,267,000