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Debt (Details 1) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Total $ 38,657 $ 41,028
Xcel Term Loan [Member]    
Debt Instrument [Line Items]    
2016 2,625  
2017 4,000  
2018 4,000  
2019 4,000  
2020 4,000  
2021 9,250  
Total $ 27,875 $ 0