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Leases - Future Payment Obligations (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Jan. 01, 2019
Leases    
2019 $ 2,382  
2020 2,725  
2021 2,581  
2022 2,420  
2023 1,703  
Thereafter 3,909  
Total lease payments 15,720  
Less interest 2,454  
Present value of lease liabilities $ 13,266 $ 498