Leases (Narrative) (Details)	9 Months Ended
	Sep. 30, 2020 property contract
Number of finance leases | contract	1
Number of financial centers under finance leases | property	1
Operating Lease [Member] | Minimum [Member]
Lessee operating leases remaining lease terms	1 year
Operating Lease [Member] | Maximum [Member]
Lessee operating leases remaining lease terms	25 years