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Leases - Estimated Annual Maturities (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Operating Leases    
Remaining 2019 $ 1,072  
2020 3,438  
2021 2,434  
2022 2,148  
2023 1,671  
2024 and thereafter 5,054  
Total undiscounted lease payments 15,817  
Interest (2,583)  
Total 13,234  
Finance Leases    
Remaining 2019 179  
2020 424  
2021 105  
2022 52  
2023 0  
2024 and thereafter 0  
Total undiscounted lase payments 760  
Interest (140)  
Total finance lease liabilities $ 620 $ 974