Earnings Per Share ("EPS") (Tables)
|12 Months Ended|
Dec. 31, 2017
|Earnings Per Share ("EPS") [Abstract]|
|Schedule of calculations of basic and diluted EPS||
Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit).
Reference 1: http://www.xbrl.org/2003/role/presentationRef