Goodwill and Intangible Assets (Amortization) (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Amortization of finite-lived intangible assets    
2016 $ 2,416  
2017 4,712  
2018 4,508  
2019 4,348  
2020 3,484  
Thereafter 6,165  
Intangible assets, net $ 25,633 $ 4,547