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Intangible Assets (Tables)
3 Months Ended
Mar. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Company's Intangible Assets

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

March 31, 2019 December 31, 2018
Gross Carrying Accumulated Gross Carrying Accumulated
(In thousands) Amount Amortization Amount Amortization
Assets eligible for amortization:
Customer lists       $      4,288       $      (3,163)       $      4,288       $      (3,071)
Patents 72 (17) 72 (16)
Non-compete agreements 332 (332) 332 (326)
Software 234 (234) 234 (234)
Other 500 (234) 500 (225)
Unamortized intangible assets:
Goodwill1 12,796 (227) 12,796 (227)
Total intangible assets $ 18,222 $ (4,207) $ 18,222 $ (4,099)
1 Amortization through December 31, 2001 prior to adoption of FASB ASC 350.