Debt And Interest Rate Swap Contracts (Schedule Of Annual Principal Payments) (Details) $ in Thousands	Sep. 30, 2015 USD ($)
Debt Instrument [Line Items]
Remainder of 2015	$ 932
2016	3,731
2017	3,732
2018	3,732
2019 and thereafter	6,637
Total scheduled principal payments	18,764
$25 Million Term Loan [Member]
Debt Instrument [Line Items]
Remainder of 2015	892
2016	3,571
2017	3,572
2018	3,572
2019 and thereafter	5,357
Total scheduled principal payments	16,964
$2.6 Million Term Loan [Member] | Citibank II [Member]
Debt Instrument [Line Items]
Remainder of 2015	40
2016	160
2017	160
2018	160
2019 and thereafter	1,280
Total scheduled principal payments	$ 1,800