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Balance Sheet Account Detail (Amortization) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Balance Sheet Related Disclosures [Abstract]        
Amortization expense $ 400 $ 100 $ 1,200 $ 300
Remainder of 2015 202   202  
2016 715   715  
2017 1,717   1,717  
2018 3,207   3,207  
2019 4,397   4,397  
2020 5,702   5,702  
2021 & Thereafter 23,630   23,630  
Total $ 39,570   $ 39,570