Leases (Maturities Of Lease Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019
Operating Leases
2019	$ 2,479
2020	9,874
2021	10,042
2022	10,260
2023	10,300
Thereafter	18,604
Total minimum lease payments	61,559
Less: Amount representing interest	(11,145)
Present value of minimum lease payments	50,414	$ 55,800
Finance Leases
2019	0
2020	0
2021	0
2022	0
2023	0
Thereafter	0
Total minimum lease payments	0
Less: Amount representing interest	0
Present value of minimum lease payments	$ 0