Leases (Narrative) (Details) - USD ($)	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Lessee Lease Description [Line Items]
Right-of-use asset	$ 29,000,000		$ 31,000,000
Operating Lease, Weighted Average Remaining Lease Term	11 years 3 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	2.55%
Operating cash flows paid for operating lease	$ 1,800,000	$ 1,400,000
Operating cash flows paid for finance lease	200,000	$ 100,000
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	0
Lease liability	$ 32,000,000		$ 34,000,000
Minimum [Member]
Lessee Lease Description [Line Items]
Lessee, Operating Lease, Remaining Lease Term	1 year
Lessee, Operating Lease, Renewal Term	5 years
Maximum [Member]
Lessee Lease Description [Line Items]
Lessee, Operating Lease, Remaining Lease Term	19 years
Lessee, Operating Lease, Renewal Term	20 years