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Aggregate annual principal maturities of long-term debt (Details) $ in Thousands | Dec. 31, 2016 USD ($)
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Aggregate annual principal maturities of long-term debt |
Annual principal maturities 2016 | $ 91
Annual principal maturities 2017 | 80
Annual principal maturities 2018 | 52
Annual principal maturities 2019 | 50
Annual principal maturities 2020 | 50
Annual principal maturities Thereafter | 69
Total Annual principal maturities | $ 392

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