Leases Leases (Schedule of Certain Lease Terms) (Details)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Weighted average discount rate	3.34%	3.34%
Weighted average remaining lease term	13 years 1 month 6 days	13 years 4 months 24 days
Minimum [Member]
Lease Expiration Period	1 year	7 months
Range of lease renewal options	1 year	1 year
Maximum [Member]
Lease Expiration Period	20 years	20 years
Range of lease renewal options	5 years	5 years