Leases (Schedule Of Supplemental Balance Sheet Information Related To Leases) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019
Leases [Abstract]
Operating lease right-of-use assets	$ 25,576
Accumulated amortization	(3,735)
Operating lease right-of-use assets, net	21,841
Current maturities of operating leases	5,270
Non-current maturities of operating leases	18,046
Total operating lease liabilities	23,316
Finance leases, Property and equipment, at cost	6,750
Finance leases, Accumulated amortization	(1,079)
Finance leases, property and equipment, net	5,671
Current maturities of finance leases	636
Non-current maturities of finance leases	5,144
Total finance lease liabilities	$ 5,780
Weighted average remaining lease term (in years): Operating leases	5 years 8 months 12 days	6 years
Weighted average remaining lease term (in years): Finance leases	11 years
Weighted average discount rate: Operating leases	5.40%	5.50%
Weighted average discount rate: Finance leases	2.00%