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Acquisition and Related Goodwill and Intangibles (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Oct. 31, 2008
Dec. 31, 2018
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Business Combination [Abstract]          
Goodwill impairment loss   $ 3,152 $ 3,152 $ 0 $ 0
Commercial Lines Specialty Insurance Agency [Member]          
Business Combination [Abstract]          
Cash purchase price $ 3,500        
Recorded goodwill 3,152        
Intangible assets acquired $ 179        
Accumulated amortization on intangible assets   $ 179 179 $ 179  
Goodwill impairment loss     $ 3,152