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Leases (Schedule of operating lease liabilities) (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Sep. 30, 2019
Lease payments due    
Less than 1 year $ 1,819  
1-2 years 1,683  
2-3 years 1,062  
3-4 years 502  
4-5 years 512  
Over 5 years 2,150  
Total undiscounted cash flows 7,728  
Discount on cash flows 1,175  
Total lease liability $ 6,553 $ 7,019