Leases (Supplemental Balance Sheet Information Related To Leases) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
ASSETS
ROU assets	$ 37,359	$ 40,156
Liabilities
Current lease liabilities	9,829	11,392
Long-term lease liabilities	30,668	31,900
Total lease liabilities	$ 40,497	$ 43,292
Weighted-average remaining lease term	4 years 9 months 18 days	5 years
Weighted-average discount rate	6.94%	5.96%
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsNoncurrent	us-gaap:OtherAssetsNoncurrent
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesCurrent	us-gaap:AccruedLiabilitiesCurrent
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent	us-gaap:OtherLiabilitiesNoncurrent