Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) (Parenthetical)

v3.19.1
Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) (Parenthetical)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]    
Percentage of U.S. federal tax rate 21.00% 21.00%