Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details Textual)

v3.10.0.1
Income Taxes (Details Textual)
6 Months Ended 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Income Taxes [Line Items]    
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00% 35.00%