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Leases - Future rent commitments (Details)
$ in Thousands
Jun. 30, 2019
USD ($)
Projected minimum rental payments under the terms of leases  
2019 $ 1,150
2020 2,342
2021 1,730
2022 1,375
2023 1,217
Thereafter 3,896
Amounts representing interest (1,179)
Present value of net future minimum lease payments $ 10,531