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Indebtedness (Future Maturities On Debt And Capital Lease Obligations) (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Indebtedness [Abstract]    
2017 $ 1,914  
2018 8,610  
2019 8,629  
2020 8,645  
2021 4,071  
2022 and thereafter 14,487  
Total payments 46,356  
Imputed interest (7,596)  
Net long-term debt and capital lease obligations, of which $5,291 is current and $33,469 is noncurrent 38,760  
Net capital lease obligations, current 5,291 $ 1,688
Net capital lease obligations, noncurrent $ 33,469