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Leases (Supplemental Cash Flow Information Related to Leases) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
Cash paid for amounts included in the measurement of lease liabilities  
Operating cash flows from operating leases $ 10,995
Operating cash flows from interest on finance leases 40
Financing cash flows from finance leases 1,275
Right-of-use assets obtained In exchange for lease obligations  
Operating leases 415
Finance leases $ 0