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Income Taxes (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Deferred Tax Assets, Net, Noncurrent $ 1,153,000   $ 1,153,000    
Income before income taxes 422,000 $ 806,000 $ (4,466,000) $ 1,495,000  
Effective income tax rate     19.00% 36.00%  
Deferred Tax Assets, Valuation Allowance 0   $ 0   $ 0
Income Tax Expense (Benefit) $ 213,000 $ 361,000 $ (830,000) $ 532,000