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Leases (Components Of Cash Flow Information Related To Leases) (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2019
USD ($)
Cash paid for amounts included in the measurement of lease liabilities  
Operating cash flows from leases $ 9,987
Leased asset obtained in exchange for new operating lease liabilities $ 3,213
Weighted Average Remaining Lease Term, Operating leases 4 years 2 months 16 days
Weighted Average Discount Rate, Operating leases 3.47%