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Intangible Assets (Tables)
9 Months Ended
Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Company's Intangible Assets

Details of the Company’s intangible assets are as follows:

September 30, 2018 December 31, 2017
Gross Carrying   Accumulated Gross Carrying   Accumulated
(In thousands)       Amount       Amortization       Amount       Amortization
Assets eligible for amortization:
Customer lists $ 4,288 $ (2,979) $ 4,288 $ (2,702)
Patents 72 (15) 72 (12)
Non-compete agreements 332 (317) 332 (291)
Software 234 (234) 234 (234)
Other 500 (217) 500 (191)
Unamortized intangible assets:
Goodwill1 12,796 (227) 12,796 (227)
Total intangible assets $ 18,222 $ (3,989) $ 18,222 $ (3,657)

1Amortization through December 31, 2001 prior to adoption of FASB ASC 350.