Common Stocks [Member] Series B Cumulative Preferred Stock [Member] Series C Cumulative Preferred Stock [Member] Series E Cumulative Preferred Stock [Member] Series G Cumulative Preferred Stock [Member] Series H Cumulative Preferred Stock [Member] Series J Cumulative Preferred Stock [Member] Series K Cumulative Preferred Stock [Member] Series M Cumulative Preferred Stock [Member] Cumulative Preferred Stocks [Member]