Leases (Schedule Of Supplemental Balance Sheet Information Related To Leases) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019
Leases [Abstract]
Operating lease right-of-use assets	$ 24,828
Accumulated amortization	(2,415)
Operating lease right-of-use assets, net	22,413
Current maturities of operating leases	5,021
Non-current maturities of operating leases	19,241
Total operating lease liabilities	24,262
Finance leases, Property and equipment, at cost	7,627
Finance leases, Accumulated amortization	(1,302)
Finance leases, property and equipment, net	6,325
Current maturities of finance leases	665
Non-current maturities of finance leases	5,611
Total finance lease liabilities	$ 6,276
Weighted average remaining lease term (in years): Operating leases	5 years 10 months 24 days	6 years
Weighted average remaining lease term (in years): Finance leases	11 years
Weighted average discount rate: Operating leases	5.50%
Weighted average discount rate: Finance leases	2.00%