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Leases Balance Sheet (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Leases [Abstract]    
Operating Lease Right Of Use Asset $ 24,828 $ 0
Operating Lease Liability Current 5,107  
Operating Lease Liability Noncurrent 19,192 $ 0
Operating Lease Liability $ 24,299  
Operating Lease Weighted Average Remaining Lease Term 1 6 years  
Operating Lease Weighted Average Discount Rate Percent 4.65%