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Nature of Operations and Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of goodwill and intangible assets

The composition of goodwill is as follows at December 31, 2016 and 2015:

   2016   2015 
   (In thousands) 
Goodwill  $1,719   $1,719