Leases (Components Of Lease Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Leases [Abstract]
Operating lease cost	$ 2,183	$ 2,569	$ 2,241
Operating cash flows from operating leases	1,992
Operating lease right-of-use assets	12,867
Other accrued liabilities	1,222
Operating lease liabilities	11,645
Total operating lease liabilities	$ 12,867
Weighted average remaining lease term	27 years
Weighted average remaining lease term	4.08%