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Goodwill (Tables)
 6 Months Ended
Jun. 30, 2017
Goodwill [Abstract]  
Schedule of balance of goodwill

The following table presents the balance of goodwill at June 30, 2017 and December 31, 2016:

   June 30, 2017   December 31, 2016 
   (In thousands) 
Goodwill  $1,719   $1,719