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Intangible Assets (Tables)
 6 Months Ended
Jun. 30, 2015
Intangible Assets [Abstract]  
Schedule of Company's Intangible Assets
  June 30, 2015   December 31, 2014           
  Gross Carrying   Accumulated   Gross Carrying   Accumulated   
(In thousands)   Amount   Amortization   Amount   Amortization   
Assets eligible for amortization:                  
       Customer lists   $ 3,933   (1,864 )   $ 3,933   $ (1,705)
       Patents   60   (2 )   23   (1)
       Non-compete agreements   261   (183 )   261   (157)
       Software   234   (234 )   234   (234)
       Other   500   (108 )   500   (92)
Unamortized intangible assets:        
       Goodwill1   11,817   227 )   11,817   (227)
Total intangible assets   $ 16,805   $ (2,618 )   $ 16,768   $ (2,416)
1
Amortization through December 31, 2001 prior to adoption of FASB ASC 350.