Quarterly report pursuant to Section 13 or 15(d)

Income (Loss) Per Share of Common Stock (Details)

v3.10.0.1
Income (Loss) Per Share of Common Stock (Details) - shares
Sep. 30, 2018
Dec. 31, 2017
Sep. 30, 2017
Earnings Per Share [Abstract]      
Shares of treasury stock excluded from weighted average number of common stock shares outstanding 2,362,418 2,362,418 2,362,418