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Taxes (Operating Loss Carryforwards) (Details)
$ in Thousands
Dec. 31, 2016
USD ($)
Operating loss carryforwards  
Total loss carryforwards $ 100,535
Expires 2017 through 2021  
Operating loss carryforwards  
Total loss carryforwards 33,413
Expires 2022 through 2026  
Operating loss carryforwards  
Total loss carryforwards 8,911
Expires 2027 through 2031  
Operating loss carryforwards  
Total loss carryforwards 2,403
Expires 2032 through 2036  
Operating loss carryforwards  
Total loss carryforwards 42,358
Indefinite  
Operating loss carryforwards  
Total loss carryforwards $ 13,450