(Loss)/Earnings Per Common Share (Details) - shares
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Common shares      
Shares with anti-dilutive effect, not included in calculation of earnings per share 1,698,569 3,437,148 2,649,796
Convertible Preferred Stock      
Shares with anti-dilutive effect, not included in calculation of earnings per share 6,522,556 7,950,425 8,479,000