Derivative Instruments (Set Forth Terms Of Interest Rate Swap And Cap Derivative Instruments) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Derivative [Line Items]
Notional amount	$ 101,146	$ 112,860
Other assets	4
Other current liabilities	962
Other long-term liabilities	520	2,177
Interest Rate Swap [Member]
Derivative [Line Items]
Notional amount	93,646	105,360
Other current liabilities	962
Other long-term liabilities	520	2,153
Interest Rate Cap [Member]
Derivative [Line Items]
Notional amount	7,500	7,500
Other assets	$ 4
Other long-term liabilities		$ 24