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Debt - Maturities of Debt (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Debt Disclosure [Abstract]    
2017 $ 452  
2018 1,481  
2019 1,523  
2020 1,526  
2021 1,507  
Thereafter 49,586  
Long-term debt $ 56,075 $ 55,653