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Aggregate annual principal maturities of long-term debt-December 31, 2015 (in thousands) (Details) $ in Thousands | Dec. 31, 2014 USD ($)
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Aggregate annual principal maturities of long-term debt |
Annual principal maturities 2016 | $ 831
Annual principal maturities 2017 | 187
Annual principal maturities 2018 | 175
Annual principal maturities 2019 | 142
Annual principal maturities 2020 | 127
Annual principal maturities Thereafter | 580
Total Annual principal maturities | $ 2,042

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