Operating Leases (Narrative) (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Operating Leases [Abstract]
Cash paid operating lease costs		$ 107,000	$ 134,000
Increase in operating lease assets and liabilities	$ 194,000