Financial Derivatives (Schedule of Interest Rate Swap) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Interest Rate Swap [Member]
Derivative [Line Items]
Notional Amount	$ 10,000
Maturity Date	May 30, 2013
Fixed Interest Rate	3.60%
Variable Interest Rate	0.10%
Amount Expected To Be Expensed Into Earnings Within The Next Twelve Months	350
Interest Rate Swap 2 [Member]
Derivative [Line Items]
Notional Amount	10,000
Maturity Date	May 30, 2015
Fixed Interest Rate	3.87%
Variable Interest Rate	0.10%
Amount Expected To Be Expensed Into Earnings Within The Next Twelve Months	$ 377