LEASES - Supplemental components of cash flow (Details)	3 Months Ended
	Jan. 31, 2020 USD ($)
LEASES
Operating cash flows from operating leases	$ 349,000
Financing cash flows from finance leases	53,000
Total cash paid for amounts included in the measurement of leases	$ 402,000
Weighted average remaining lease term, operating leases	6 years 9 months 26 days
Weighted average remaining lease term, finance leases	8 months 1 day
Weighted average discount rate, operating leases	4.52%
Weighted average discount rate, finance leases	5.43%