Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Narrative (Details)

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Income Taxes - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Income Tax Disclosure [Abstract]          
Federal statutory rate 21.00% 21.00% 21.00% 21.00%  
Effective income tax rate 33.80% (29.80%) 33.60% 29.60%  
Minimum amount of future taxable income required to realize deferred tax assets $ 8,600,000   $ 8,600,000    
Unrecognized tax benefits $ 4,000   $ 4,000   $ 5,000