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Income Taxes (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Income Tax Disclosure [Abstract]          
Deferred Tax Liabilities, Net, Noncurrent $ 992,000   $ 992,000   $ 992,000
Income tax expense (benefit) 489,000 $ 561,000 $ 2,262,000 $ 2,794,000  
Effective income tax rate     32.00% 34.00%  
Unrecognized Tax Benefits $ 0   $ 0   $ 0