Fair Value Of Financial Instruments (Summary of Financial Liabilities Measured At Fair Value On A Recurring Basis) (Details) - Interest Rate Swap - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value of interest rate swaps	$ 2,577	$ 4,110
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value of interest rate swaps	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value of interest rate swaps	2,577	4,110
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Fair value of interest rate swaps	$ 0	$ 0