Leases (Schedule of Lease Income) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Leases [Abstract]
Lease income - direct finance leases: Interest income on lease receivables	$ 169,000	$ 176,000	$ 345,000	$ 351,000
Lease income - operating leases	53,000	63,000	111,000	119,000
Total lease income	$ 222,000	$ 239,000	$ 456,000	$ 470,000