Leases (Components Of Lease Expense) (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)
Leases [Abstract]
Operating lease cost	$ 529	$ 1,634
Operating cash flows from operating leases	338	1,631
Operating lease right-of-use assets	12,883	12,883
Other accrued liabilities	1,183	1,183
Operating lease liabilities	11,700	11,700
Total operating lease liabilities	$ 12,883	$ 12,883
Weighted average remaining lease term	27 years	27 years
Weighted average remaining lease term	4.09%	4.09%