Annual report pursuant to Section 13 and 15(d)

Unsecured Revolving Credit Facility And Term Loans (Schedule Of Defined Leverage Ratio) (Details)

v3.8.0.1
Unsecured Revolving Credit Facility And Term Loans (Schedule Of Defined Leverage Ratio) (Details)
 12 Months Ended
Dec. 31, 2017
45% Unsecured Term Loan Leverage Ratio [Member]  
Debt Instrument [Line Items]  
Spread over LIBOR 1.45%
45% Unsecured Term Loan Leverage Ratio [Member] | Maximum [Member]  
Debt Instrument [Line Items]  
Leverage ratio 45.00%
45% And 50% Unsecured Term Loan Leverage Ratio [Member]  
Debt Instrument [Line Items]  
Spread over LIBOR 1.55%
45% And 50% Unsecured Term Loan Leverage Ratio [Member] | Minimum [Member]  
Debt Instrument [Line Items]  
Leverage ratio 45.00%
45% And 50% Unsecured Term Loan Leverage Ratio [Member] | Maximum [Member]  
Debt Instrument [Line Items]  
Leverage ratio 50.00%
50% And 55% Unsecured Term Loan Leverage Ratio [Member]  
Debt Instrument [Line Items]  
Spread over LIBOR 1.65%
50% And 55% Unsecured Term Loan Leverage Ratio [Member] | Minimum [Member]  
Debt Instrument [Line Items]  
Leverage ratio 50.00%
50% And 55% Unsecured Term Loan Leverage Ratio [Member] | Maximum [Member]  
Debt Instrument [Line Items]  
Leverage ratio 55.00%
55% Unsecured Term Loan Leverage Ratio [Member]  
Debt Instrument [Line Items]  
Spread over LIBOR 1.95%
55% Unsecured Term Loan Leverage Ratio [Member] | Minimum [Member]  
Debt Instrument [Line Items]  
Leverage ratio 55.00%