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Long-Term Debt And Other Long-Term Liabilities Long-Term Debt And Other Long-Term Liabilities (Capital Leases) (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Beginning April 1,    
2017 $ 6,168  
2018 6,168  
2019 6,168  
2020 7,815  
2021 579  
Total future payments 26,898  
Less payments related to:    
Maintenance 7,213  
Interest 1,677  
Present value of future minimum payments $ 18,008 $ 18,918