Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Maturities of Long-term Debt (Details)

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Long-Term Debt - Maturities of Long-term Debt (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Debt Disclosure [Abstract]    
2017 $ 3,081  
2018 13,350  
2019 77  
2020 39  
Total $ 16,547 $ 179,443