Equity Equity - Narrative (Details)	12 Months Ended
	Dec. 30, 2013	Dec. 31, 2013	Dec. 30, 2012	Dec. 31, 2012	Dec. 30, 2011	Dec. 31, 2011
4.50% Cumulative Convertible Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		4.50%
5.75% Cumulative Convertible Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		5.75%
5.0% Cumulative Convertible Preferred Stock Series Two Thousand And Five B [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		5.00%
Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Issued During Period, Shares, Conversion of Convertible Securities	0	0	0	0	111,000	3,000
Preferred Stock | 4.50% Cumulative Convertible Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		4.50%
Stock Issued During Period, Shares, Conversion of Convertible Securities					0
Preferred Stock | 5.75% Cumulative Convertible Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		5.75%
Stock Issued During Period, Shares, Conversion of Convertible Securities					3,000	3,000
Preferred Stock | 5.0% Cumulative Convertible Preferred Stock Series Two Thousand And Five B [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		5.00%
Stock Issued During Period, Shares, Conversion of Convertible Securities					0
Paid-In Capital
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Issued During Period, Shares, Conversion of Convertible Securities		0		0		111,111
Paid-In Capital | 5.75% Cumulative Convertible Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Issued During Period, Shares, Conversion of Convertible Securities						111,111