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Revolving Credit Facility and Long-Term Debt - Future Minimum Payments on Long-term Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Debt Disclosure [Abstract]    
2016 $ 10,000  
2017 197,593  
Total long-term debt $ 207,593 $ 224,490