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Leases (Narrative) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
Jul. 02, 2019
ft²
Dec. 31, 2018
USD ($)
Lease [Line Items]      
Future minimum rental commitments     $ 91,841
2019     18,992
2020     18,365
2021     9,469
2022     9,180
2023     8,919
Thereafter     $ 26,916
Area of property | ft²   315,000  
Annual lease expense $ 7,800    
Monthly lease expense $ 650    
Lease expiration 2036