Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements (Fair Value Of Other Financial Liabilities) (Details)

v3.6.0.2
Fair Value Measurements (Fair Value Of Other Financial Liabilities) (Details) - Fair Value, Measurements, Recurring [Member] - USD ($)
Dec. 31, 2016
Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest Rate Derivative Assets, at Fair Value $ 3,577,000  
Interest Rate Derivative Liabilities, at Fair Value   $ 169,000
Level 1 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest Rate Derivative Assets, at Fair Value 0  
Interest Rate Derivative Liabilities, at Fair Value   0
Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest Rate Derivative Assets, at Fair Value 3,577,000  
Interest Rate Derivative Liabilities, at Fair Value   169,000
Level 3 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Interest Rate Derivative Assets, at Fair Value $ 0  
Interest Rate Derivative Liabilities, at Fair Value   $ 0