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Selected Balance Sheet Accounts (Details 2)
$ in Thousands
Jun. 30, 2015
USD ($)
Amortization expense for the remainder of the year and for the next five years  
2015 $ 1,232
2016 2,123
2017 1,937
2018 1,663
2019 732
2020 and thereafter 3,782
Total $ 11,469