Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Narrative) (Details)

v3.8.0.1
Income Taxes (Narrative) (Details) - USD ($)
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Income Taxes [Abstract]    
Uncertain tax benefit positions that would reduce the effective income tax rate if recognized $ 45,000  
Effective tax rate (0.40%) (4.80%)
Federal tax rate 21.00%  
Foreign income taxes, net of foreign tax credits 12.00%  
Uncertain tax positions $ 0