Financial Derivatives (Schedule of Fair Value of Derivative Instruments) (Details) (USD $) In Thousands, unless otherwise specified			6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013 Interest Rate Swap Maturing 5/30/2013 [Member] Other Liabilities [Member]	Dec. 31, 2012 Interest Rate Swap Maturing 5/30/2015 [Member] Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Type			Interest rate contracts	Interest rate contracts
Balance Sheet Location			Other liabilities	Other liabilities
Interest Rate Derivative Liabilities, at Fair Value	$ 727	$ 1,103	$ 727	$ 1,103