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
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Income Tax Disclosure [Abstract]      
Federal statutory rate 21.00% 21.00%  
Effective income tax rate 31.70% 26.70%  
Minimum amount of future taxable income required to realize deferred tax assets $ 10,700,000    
Unrecognized tax benefits $ 4,000   $ 5,000