FINANCING AGREEMENTS - Debt Table (Details) - USD ($)		3 Months Ended
	May 13, 2019	Jul. 31, 2020	Apr. 30, 2020
Long-term indebtedness
Total long-term debt		$ 3,693,000	$ 2,803,000
Less current installments		1,842,000	795,000
Long-term debt, excluding current installments		1,851,000	2,008,000
Asset Based Line Of Credit 5.50 Percent Due October 2020 | Line of Credit
Long-term indebtedness
Total long-term debt		$ 899,000
Rate		5.00%
Asset Based Line Of Credit 6.25 Percent Due October 2019 | Line of Credit
Long-term indebtedness
Maximum borrowing		$ 2,000,000
Asset Based Line Of Credit 6.25 Percent Due October 2019 | Line of Credit | Base Rate
Long-term indebtedness
Rate		5.50%
Asset Based Line Of Credit 6.25 Percent Due October 2019 | Line of Credit | Base Rate | Minimum
Long-term indebtedness
Rate		5.00%
Guidance Line Of Credit 6.25 Percent Due October 2019 | Line of Credit
Long-term indebtedness
Maximum borrowing		$ 250,000
Mortgage note payable 5.35 percent due October 2023 | Mortgage note payable
Long-term indebtedness
Total long-term debt		766,000	773,000
Notes Payable		$ 815,000
Rate		5.35%
Monthly installments		$ 5,573
Final payment		$ 690,829
Real estate term loan period		5 years
Amortization period		20 years
Term Loan Note Payable 5.50 Percent Due May 2024
Long-term indebtedness
Total long-term debt		$ 43,000	45,000
Term Loan Note Payable 5.50 Percent Due May 2024 | Note Payable
Long-term indebtedness
Total long-term debt	$ 54,000
Rate	5.50%	5.50%
Monthly installments	$ 1,034	$ 1,034
Final payment	$ 1,034	1,034
Term	5 years
Amortization period	5 years
Paycheck Protection Program Loan Note Payable 1.00 Percent Due April 2022 | Note Payable
Long-term indebtedness
Notes Payable		$ 1,985,000	$ 1,985,000
Rate		1.00%
Monthly installments		$ 111,712,000
Final payment		$ 111,712,000
Term of loan		2 years