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Employee Benefit Plans (Detail Textuals) - Retirement Income Plan - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]      
Benefit obligation exceeds fair value of the plan assets $ (5,053) $ (8,347)  
Employer contribution 5,000 0  
Accumulated other comprehensive loss, before tax $ 1,888 $ (1,650) $ 1,240
Expected long-term return assumption 7.00% 7.00% 7.00%
Percentage of investment for long term growth 70.00%    
Percentage for near term benefit payments 30.00%