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Income Taxes (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Income Tax Disclosure [Abstract]          
Deferred Tax Liabilities, Net $ 395,000   $ 395,000   $ 395,000
Income Tax Expense (Benefit) 361,000 $ 958,000 $ 532,000 $ 1,772,000  
Effective income tax rate     36.00% 32.00%  
Unrecognized Tax Benefits $ 0   $ 0   $ 0