Earnings Per Share (Narrative) (Details) - shares	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Earnings Per Share Narrative [Line Items]
Weighted average unvested shares outstanding	200,000	300,000
Anti-dilutive stock options	0	0
Cumulative convertible preferred shares, dividend rate	5.417%		5.417%
5.417% Series 1 Cumulative Convertible Preferred shares
Earnings Per Share Narrative [Line Items]
Cumulative convertible preferred shares, dividend rate	5.417%	5.417%