FINANCING AGREEMENTS - Debt Table (Details) - USD ($)		3 Months Ended
	May 13, 2019	Jul. 31, 2019	Apr. 30, 2019
Long-term indebtedness
Total long-term debt		$ 1,477,000	$ 1,922,000
Less current installments		666,000	1,121,000
Long-term debt, excluding current installments		811,000	801,000
Capital Leases
Long-term indebtedness
Capital lease obligations			98,000
Asset Based Line Of Credit 6.25 Percent Due October 2019 | Line of Credit
Long-term indebtedness
Total long-term debt		$ 636,000	975,000
Rate		6.25%
Maximum borrowing		$ 1,500,000
Asset Based Line Of Credit 6.25 Percent Due October 2019 | Line of Credit | Prime Rate
Long-term indebtedness
Rate		6.25%
Asset Based Line Of Credit 6.25 Percent Due October 2019 | Line of Credit | Prime Rate | Minimum
Long-term indebtedness
Rate		5.00%
Guidance Line Of Credit 6.25 Percent Due October 2019 [Member] | Line of Credit
Long-term indebtedness
Total long-term debt			54,000
Rate		6.25%
Maximum borrowing		$ 250,000
Mortgage note payable 5.35 percent due October 2023 | Mortgage note payable
Long-term indebtedness
Total long-term debt		789,000	$ 795,000
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		$ 52,000
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