Note 21 - Leases - Balances for Operating and Finance Right-of-use Assets and Lease Liabilities (Details) - USD ($)	Sep. 30, 2020	Sep. 30, 2019
Right-of-use assets	$ 14,721,000
Finance lease assets	336,000
Total lease assets	15,057,000
Present value of lease obligations, operating leases	16,719,000
Finance lease liabilities	51,000
Total lease liabilities	$ 16,770,000