Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

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Income Taxes (Details) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Dec. 31, 2017
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Income Tax Disclosure [Abstract]          
Effective tax rate   21.00% 28.00% 21.00% 30.00%
Income tax benefit $ 381,000